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A263445
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a(n) = (2n+1)*(n+1)!*Bernoulli(2n).
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2
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1, 1, -1, 4, -36, 600, -16584, 705600, -43751232, 3790108800, -443539877760, 68218849036800, -13478425925184000, 3355402067989171200, -1035218714714606822400, 390189256983139461120000, -177430554756972746695065600, 96269372301568677170319360000
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OFFSET
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0,4
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LINKS
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FORMULA
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a(n) = (2n+1)*(n+1)!*Bernoulli(2n).
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MAPLE
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seq((2*n+1)*(n+1)!*bernoulli(2*n), n=0..50); # Robert Israel, Oct 18 2015
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MATHEMATICA
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Table[(2n + 1) (n + 1)! BernoulliB[2n], {n, 0, 17}]
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PROG
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(PARI) vector(30, n, n--; (2*n+1)*(n+1)!*bernfrac(2*n)) \\ Altug Alkan, Oct 18 2015
(Python)
from math import factorial
from sympy import bernoulli
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CROSSREFS
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KEYWORD
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sign
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AUTHOR
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STATUS
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approved
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