-51943281731
domain: Z
Appears in sequences
- Genocchi numbers (of first kind); unsigned coefficients give expansion of x*tan(x/2).at n=10A001469
- Genocchi numbers (of first kind): expansion of 2*x/(exp(x)+1).at n=21A036968
- 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=22A226158
- a(n) = A226158(n) - 2*A226158(n+1).at n=22A230324
- The autosequence of the first kind between A226158(n) and A278331(n).at n=20A279172