OFFSET
0,3
COMMENTS
Given by alternating sums of coefficients of polynomials spawned by sums of binomial(n,k)^2*k^(2m). - John M. Campbell, Nov 30 2011
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 0..100
MATHEMATICA
Table[BernoulliB[2*n]*(2*n+1)!/n!, {n, 0, 20}]
PROG
(PARI) a(n)=bernfrac(2*n)*(2*n+1)!/n!
(Magma) [Bernoulli(2*n)*Factorial(2*n+1)/Factorial(n): n in [0..20]]; // Vincenzo Librandi, Jul 14 2016
CROSSREFS
KEYWORD
sign
AUTHOR
Franklin T. Adams-Watters, Nov 19 2009
STATUS
approved