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A002378 Oblong (or promic, pronic, or heteromecic) numbers: n(n+1).
(Formerly M1581 N0616)
+0
240
0, 2, 6, 12, 20, 30, 42, 56, 72, 90, 110, 132, 156, 182, 210, 240, 272, 306, 342, 380, 420, 462, 506, 552, 600, 650, 702, 756, 812, 870, 930, 992, 1056, 1122, 1190, 1260, 1332, 1406, 1482, 1560, 1640, 1722, 1806, 1892, 1980, 2070, 2162, 2256, 2352, 2450, 2550 (list; graph; listen)
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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.


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