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Search: id:A082133
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| A082133 |
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Expansion of xexp(2x)cosh(x). |
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+0
4
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| 0, 1, 4, 15, 56, 205, 732, 2555, 8752, 29529, 98420, 324775, 1062888, 3454373, 11160268, 35872275, 114791264, 365897137, 1162261476, 3680494655, 11622614680, 36611236221, 115063885244, 360882185515, 1129718145936
(list; graph; listen)
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OFFSET
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0,3
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COMMENT
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Binomial transform of A057711. 2nd binomial transform of (0,1,0,3,0,5,0,7,....)
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FORMULA
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a(n)=n(1^(n-1)+3^(n-1))/2 E.g.f. xexp(2x)cosh(x)
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MAPLE
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with (combinat):seq(sum(sum(stirling2(n, j), j=1..3), k=1..n), n=0..24); - Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), Dec 04 2007
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CROSSREFS
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Cf. A082134, A082135, A082136.
Adjacent sequences: A082130 A082131 A082132 this_sequence A082134 A082135 A082136
Sequence in context: A064813 A009940 A081163 this_sequence A060111 A077824 A010905
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KEYWORD
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easy,nonn
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AUTHOR
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Paul Barry (pbarry(AT)wit.ie), Apr 06 2003
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