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A006000 a(n) = (n+1)*(n^2+n+2)/2; g.f.: (1 + 2 x^2 ) / ( 1 - x )^4.
(Formerly M3436)
+0
4
1, 4, 12, 28, 55, 96, 154, 232, 333, 460, 616, 804, 1027, 1288, 1590, 1936, 2329, 2772, 3268, 3820, 4431, 5104, 5842, 6648, 7525, 8476, 9504, 10612, 11803, 13080, 14446, 15904, 17457, 19108, 20860, 22716, 24679, 26752, 28938, 31240, 33661, 36204, 38872, 41668, 44595, 47656, 50854, 54192 (list; graph; listen)
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Last modified November 29 12:46 EST 2009. Contains 167659 sequences.


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