1109652905

Appears in sequences

• Genocchi numbers (of first kind); unsigned coefficients give expansion of x*tan(x/2).at n=9A001469
• Genocchi numbers (of first kind): expansion of 2*x/(exp(x)+1).at n=19A036968
• An interleaving of the Genocchi numbers of the first and second kind, A110501 and A005439.at n=19A099960
• Unsigned Genocchi numbers (of first kind) of even index.at n=9A110501
• a(n) = 2*n*(2^n - 1)*zeta(1-n) where in the case n=0 the limit is understood, zeta(s) the Riemann zeta function.at n=20A226158
• a(n) = A226158(n) - 2*A226158(n+1).at n=20A230324
• The autosequence of the first kind between A226158(n) and A278331(n).at n=18A279172