Denominator of b(n) = Sum_{k=1..n} (-1)^(k+1)/k*Sum_{i=0..k-1} (-1)^i/(2*i+1).
A073595
Denominator of b(n) = Sum_{k=1..n} (-1)^(k+1)/k*Sum_{i=0..k-1} (-1)^i/(2*i+1).
Terms
- a(0) =1a(1) =3a(2) =45a(3) =315a(4) =1575a(5) =51975a(6) =4729725a(7) =4729725a(8) =18555075a(9) =4583103525a(10) =50414138775a(12) =793359341775
External references
- oeis: A073595