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A001082 a(n) = n(3n-4)/4 if n even, (n-1)(3n+1)/4 if n odd. +0
27
0, 1, 5, 8, 16, 21, 33, 40, 56, 65, 85, 96, 120, 133, 161, 176, 208, 225, 261, 280, 320, 341, 385, 408, 456, 481, 533, 560, 616, 645, 705, 736, 800, 833, 901, 936, 1008, 1045, 1121, 1160, 1240, 1281, 1365, 1408, 1496, 1541, 1633, 1680, 1776, 1825, 1925, 1976 (list; graph; listen)
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Last modified November 27 22:38 EST 2009. Contains 167602 sequences.


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