Contar de 3 en 3 desde el 2000 hasta el 0

2000, 1997, 1994, 1991, 1988, 1985, 1982, 1979, 1976, 1973, 1970, 1967, 1964, 1961, 1958, 1955, 1952, 1949, 1946, 1943, 1940, 1937, 1934, 1931, 1928, 1925, 1922, 1919, 1916, 1913, 1910, 1907, 1904, 1901, 1898, 1895, 1892, 1889, 1886, 1883, 1880, 1877, 1874, 1871, 1868, 1865, 1862, 1859, 1856, 1853, 1850, 1847, 1844, 1841, 1838, 1835, 1832, 1829, 1826, 1823, 1820, 1817, 1814, 1811, 1808, 1805, 1802, 1799, 1796, 1793, 1790, 1787, 1784, 1781, 1778, 1775, 1772, 1769, 1766, 1763, 1760, 1757, 1754, 1751, 1748, 1745, 1742, 1739, 1736, 1733, 1730, 1727, 1724, 1721, 1718, 1715, 1712, 1709, 1706, 1703, 1700, 1697, 1694, 1691, 1688, 1685, 1682, 1679, 1676, 1673, 1670, 1667, 1664, 1661, 1658, 1655, 1652, 1649, 1646, 1643, 1640, 1637, 1634, 1631, 1628, 1625, 1622, 1619, 1616, 1613, 1610, 1607, 1604, 1601, 1598, 1595, 1592, 1589, 1586, 1583, 1580, 1577, 1574, 1571, 1568, 1565, 1562, 1559, 1556, 1553, 1550, 1547, 1544, 1541, 1538, 1535, 1532, 1529, 1526, 1523, 1520, 1517, 1514, 1511, 1508, 1505, 1502, 1499, 1496, 1493, 1490, 1487, 1484, 1481, 1478, 1475, 1472, 1469, 1466, 1463, 1460, 1457, 1454, 1451, 1448, 1445, 1442, 1439, 1436, 1433, 1430, 1427, 1424, 1421, 1418, 1415, 1412, 1409, 1406, 1403, 1400, 1397, 1394, 1391, 1388, 1385, 1382, 1379, 1376, 1373, 1370, 1367, 1364, 1361, 1358, 1355, 1352, 1349, 1346, 1343, 1340, 1337, 1334, 1331, 1328, 1325, 1322, 1319, 1316, 1313, 1310, 1307, 1304, 1301, 1298, 1295, 1292, 1289, 1286, 1283, 1280, 1277, 1274, 1271, 1268, 1265, 1262, 1259, 1256, 1253, 1250, 1247, 1244, 1241, 1238, 1235, 1232, 1229, 1226, 1223, 1220, 1217, 1214, 1211, 1208, 1205, 1202, 1199, 1196, 1193, 1190, 1187, 1184, 1181, 1178, 1175, 1172, 1169, 1166, 1163, 1160, 1157, 1154, 1151, 1148, 1145, 1142, 1139, 1136, 1133, 1130, 1127, 1124, 1121, 1118, 1115, 1112, 1109, 1106, 1103, 1100, 1097, 1094, 1091, 1088, 1085, 1082, 1079, 1076, 1073, 1070, 1067, 1064, 1061, 1058, 1055, 1052, 1049, 1046, 1043, 1040, 1037, 1034, 1031, 1028, 1025, 1022, 1019, 1016, 1013, 1010, 1007, 1004, 1001, 998, 995, 992, 989, 986, 983, 980, 977, 974, 971, 968, 965, 962, 959, 956, 953, 950, 947, 944, 941, 938, 935, 932, 929, 926, 923, 920, 917, 914, 911, 908, 905, 902, 899, 896, 893, 890, 887, 884, 881, 878, 875, 872, 869, 866, 863, 860, 857, 854, 851, 848, 845, 842, 839, 836, 833, 830, 827, 824, 821, 818, 815, 812, 809, 806, 803, 800, 797, 794, 791, 788, 785, 782, 779, 776, 773, 770, 767, 764, 761, 758, 755, 752, 749, 746, 743, 740, 737, 734, 731, 728, 725, 722, 719, 716, 713, 710, 707, 704, 701, 698, 695, 692, 689, 686, 683, 680, 677, 674, 671, 668, 665, 662, 659, 656, 653, 650, 647, 644, 641, 638, 635, 632, 629, 626, 623, 620, 617, 614, 611, 608, 605, 602, 599, 596, 593, 590, 587, 584, 581, 578, 575, 572, 569, 566, 563, 560, 557, 554, 551, 548, 545, 542, 539, 536, 533, 530, 527, 524, 521, 518, 515, 512, 509, 506, 503, 500, 497, 494, 491, 488, 485, 482, 479, 476, 473, 470, 467, 464, 461, 458, 455, 452, 449, 446, 443, 440, 437, 434, 431, 428, 425, 422, 419, 416, 413, 410, 407, 404, 401, 398, 395, 392, 389, 386, 383, 380, 377, 374, 371, 368, 365, 362, 359, 356, 353, 350, 347, 344, 341, 338, 335, 332, 329, 326, 323, 320, 317, 314, 311, 308, 305, 302, 299, 296, 293, 290, 287, 284, 281, 278, 275, 272, 269, 266, 263, 260, 257, 254, 251, 248, 245, 242, 239, 236, 233, 230, 227, 224, 221, 218, 215, 212, 209, 206, 203, 200, 197, 194, 191, 188, 185, 182, 179, 176, 173, 170, 167, 164, 161, 158, 155, 152, 149, 146, 143, 140, 137, 134, 131, 128, 125, 122, 119, 116, 113, 110, 107, 104, 101, 98, 95, 92, 89, 86, 83, 80, 77, 74, 71, 68, 65, 62, 59, 56, 53, 50, 47, 44, 41, 38, 35, 32, 29, 26, 23, 20, 17, 14, 11, 8, 5, 2, 0.