a(n) = 6*Zeta(1-n)*n*(2^n-1) - Zeta(-n)*(n+1)*(2^(n+2)-2), for n = 0 the limit is understood.
A240677
a(n) = 6*Zeta(1-n)*n*(2^n-1) - Zeta(-n)*(n+1)*(2^(n+2)-2), for n = 0 the limit is understood.
Terms
- a(0) =1a(1) =-2a(2) =-3a(3) =-1a(4) =3a(5) =3a(6) =-9a(7) =-17a(8) =51a(9) =155a(10) =-465a(11) =-2073a(12) =6219a(13) =38227a(14) =-114681a(15) =-929569a(16) =2788707a(17) =28820619a(18) =-86461857a(19) =-1109652905a(20) =3328958715a(21) =51943281731a(22) =-155829845193
External references
- oeis: A240677