a(n) = s(1)*s(2)*...*s(n+1)*(1/s(2) - 1/s(3) + ... + c/s(n+1)), where c = (-1)^(n+1) and s(k) = 4k-3 for k = 1,2,3,...
A024384
a(n) = s(1)*s(2)*...*s(n+1)*(1/s(2) - 1/s(3) + ... + c/s(n+1)), where c = (-1)^(n+1) and s(k) = 4k-3 for k = 1,2,3,...
Terms
- a(0) =1a(1) =4a(2) =97a(3) =1064a(4) =32289a(5) =598380a(6) =22574145a(7) =593534160a(8) =26957380545a(9) =920377787220
External references
- oeis: A024384