Numerators of 1/2 + sum(chi(p)^(4*n / (p-1))/p) where the sum is over primes p of the form 4k+1 such that p-1 divides 4*n and the numbers chi(p) are given by A002172.

A274398

Numerators of 1/2 + sum(chi(p)^(4*n / (p-1))/p) where the sum is over primes p of the form 4k+1 such that p-1 divides 4*n and the numbers chi(p) are given by A002172.

Terms

    a(0) =1a(1) =13a(2) =-83a(3) =649a(4) =-59a(5) =2089a(6) =-7379a(7) =8829a(8) =-410479a(9) =84273a(10) =-4091a(11) =2032897a(12) =-867947a(13) =951417a(14) =-47224023a(15) =2228469a(16) =-262139a(17) =19669687769a(18) =-1048571a(19) =1461748549a(20) =-1500199283a(21) =746586657a(22) =-16777211a(23) =747004180629a(24) =-6777994779a(25) =7113541809

External references