A156305 - cp's OEIS frontend

A156305 G.f.: A(x) = exp( Sum_{n>=1} sigma(n) * C(2n-1,n) x^n/n ), a power series in x with integer coefficients.

n	a(n)
0	1
1	1
2	5
3	18
4	87
5	290
6	1553
7	5015
8	25436
9	94500
10	431464
11	1519749
12	8024004
13	26746757
14	125190249
15	498138920
16	2221127601
17	8020960187
18	38836436844
19	138444409552
20	655009491676
21	2512996318026
22	10775473291178
23	40824090856703

[1, 1, 5, 18, 87, 290, 1553, 5015, 25436, 94500, 431464, 1519749, 8024004, 26746757, 125190249, 498138920, 2221127601, 8020960187, 38836436844, 138444409552, 655009491676, 2512996318026, 10775473291178, 40824090856703]

cp's OEIS Frontend

A156305 G.f.: A(x) = exp( Sum_{n>=1} sigma(n) * C(2n-1,n) x^n/n ), a power series in x with integer coefficients.

Table of values

List of values

cp's OEIS Frontend

A156305 G.f.: A(x) = exp( Sum_{n>=1} sigma(n) * C(2*n-1,n) * x^n/n ), a power series in x with integer coefficients.

Table of values

List of values

A156305 G.f.: A(x) = exp( Sum_{n>=1} sigma(n) * C(2n-1,n) x^n/n ), a power series in x with integer coefficients.