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Search: id:A055998
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A055998 n*(n+5)/2. +0
21
0, 3, 7, 12, 18, 25, 33, 42, 52, 63, 75, 88, 102, 117, 133, 150, 168, 187, 207, 228, 250, 273, 297, 322, 348, 375, 403, 432, 462, 493, 525, 558, 592, 627, 663, 700, 738, 777, 817, 858, 900, 943, 987, 1032, 1078, 1125, 1173, 1222, 1272 (list; graph; listen)
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Last modified December 7 23:50 EST 2009. Contains 170430 sequences.


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