A180875 - cp's OEIS frontend

A180875 Sum_{j>=1} j^n2^j/binomial(2j,j) = r_n*Pi/2 + s_n with integer r_n and s_n; sequence gives s_n.

n	a(n)
0	1
1	3
2	11
3	55
4	355
5	2807
6	26259
7	283623
8	3473315
9	47552791
10	719718067
11	11932268231
12	215053088835
13	4186305575415
14	87534887434835
15	1956680617267879
16	46561960552921315
17	1175204650272267479
18	31357650670190565363
19	881958890078887314567
20	26078499305918584929155
21	808742391638178302137783

[1, 3, 11, 55, 355, 2807, 26259, 283623, 3473315, 47552791, 719718067, 11932268231, 215053088835, 4186305575415, 87534887434835, 1956680617267879, 46561960552921315, 1175204650272267479, 31357650670190565363, 881958890078887314567, 26078499305918584929155, 808742391638178302137783]

cp's OEIS Frontend

A180875 Sum_{j>=1} j^n2^j/binomial(2j,j) = r_n*Pi/2 + s_n with integer r_n and s_n; sequence gives s_n.

Table of values

List of values

cp's OEIS Frontend

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.

Table of values

List of values

A180875 Sum_{j>=1} j^n2^j/binomial(2j,j) = r_n*Pi/2 + s_n with integer r_n and s_n; sequence gives s_n.