a(n) = (4^n*(Z(-n, 1/4) - Z(-n, 3/4)) + Z(-n, 1)*(2^(n+1)-1))*A171977(n+1), where Z(n, c) is the Hurwitz zeta function.
A335955
a(n) = (4^n*(Z(-n, 1/4) - Z(-n, 3/4)) + Z(-n, 1)*(2^(n+1)-1))*A171977(n+1), where Z(n, c) is the Hurwitz zeta function.
Terms
- a(0) =0a(1) =-1a(2) =-1a(3) =1a(4) =5a(5) =-1a(6) =-61a(7) =17a(8) =1385a(9) =-31a(10) =-50521a(11) =691a(12) =2702765a(13) =-5461a(14) =-199360981a(15) =929569a(16) =19391512145a(17) =-3202291a(19) =221930581a(21) =-4722116521a(23) =968383680827
External references
- oeis: A335955