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Search: id:A004993
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| A004993 |
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(6^n/n!)*product[ k=0..n-1 ](6*k + 1). |
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+0
6
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| 1, 6, 126, 3276, 93366, 2800980, 86830380, 2753763480, 88808872230, 2901089826180, 95735964263940, 3185396629145640, 106710787076378940, 3595332672265690440, 121727691903852662040, 4138741524730990509360
(list; graph; listen)
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OFFSET
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0,2
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FORMULA
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G.f.: A(x) = (1 - 36*x)^(-1/6).
a(n) ~ Gamma(1/6)^-1*n^(-5/6)*6^(2*n)*{1 - 5/72*n^-1 - ...}. - Joe Keane (jgk(AT)jgk.org), Nov 24 2001
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CROSSREFS
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Sequence in context: A078261 A132507 A109820 this_sequence A133792 A081623 A089314
Adjacent sequences: A004990 A004991 A004992 this_sequence A004994 A004995 A004996
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KEYWORD
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nonn
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AUTHOR
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Joe Keane (jgk(AT)jgk.org)
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EXTENSIONS
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Corrected by Franklin T. Adams-Watters, Oct 25 2006
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