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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 December 15 00:47 EST 2009. Contains 170825 sequences.


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