Sum_{j>=1} j^n*2^j/binomial(2*j,j) = r_n*Pi/2 + s_n with integer r_n and s_n; sequence gives s_n.
A180875
Sum_{j>=1} j^n*2^j/binomial(2*j,j) = r_n*Pi/2 + s_n with integer r_n and s_n; sequence gives s_n.
Terms
- a(0) =1a(1) =3a(2) =11a(3) =55a(4) =355a(5) =2807a(6) =26259a(7) =283623a(8) =3473315a(9) =47552791a(10) =719718067a(11) =11932268231a(12) =215053088835
External references
- oeis: A180875