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A048900
Heptagonal pentagonal numbers.
+0
3
1, 4347, 16701685, 64167869935, 246532939589097, 947179489733441251, 3639063353022941697757, 13981280455134652269341655, 53716075869563980995868941265, 206377149509584359851476202998987
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Maintained by
N. J. A. Sloane
(
njas@research.att.com
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Last modified November 25 14:49 EST 2009. Contains 167514 sequences.
AT&T Labs Research
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