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A045945 Hexagonal matchstick numbers: 3n(3n+1). +0
3
0, 12, 42, 90, 156, 240, 342, 462, 600, 756, 930, 1122, 1332, 1560, 1806, 2070, 2352, 2652, 2970, 3306, 3660, 4032, 4422, 4830, 5256, 5700, 6162, 6642, 7140, 7656, 8190, 8742, 9312, 9900, 10506, 11130, 11772, 12432, 13110, 13806, 14520, 15252, 16002 (list; graph; listen)
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Last modified November 30 13:13 EST 2009. Contains 167758 sequences.


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