A197601 - cp's OEIS frontend

A197601 G.f.: exp( Sum_{n>=1} [Sum_{k=0..2n} C(2n,k)^2 x^k] x^n/n ).

n	a(n)
0	1
1	1
2	5
3	14
4	52
5	187
6	708
7	2734
8	10758
9	43004
10	174004
11	711660
12	2936564
13	12211688
14	51124185
15	215299685
16	911445413
17	3876523626
18	16556573129
19	70980163570
20	305343924258
21	1317634326631
22	5702146948069
23	24741071869651
24	107608326588838
25	469073933764287

[1, 1, 5, 14, 52, 187, 708, 2734, 10758, 43004, 174004, 711660, 2936564, 12211688, 51124185, 215299685, 911445413, 3876523626, 16556573129, 70980163570, 305343924258, 1317634326631, 5702146948069, 24741071869651, 107608326588838, 469073933764287]

cp's OEIS Frontend

A197601 G.f.: exp( Sum_{n>=1} [Sum_{k=0..2n} C(2n,k)^2 x^k] x^n/n ).

Table of values

List of values

cp's OEIS Frontend

A197601 G.f.: exp( Sum_{n>=1} [Sum_{k=0..2*n} C(2*n,k)^2 *x^k] *x^n/n ).

Table of values

List of values

A197601 G.f.: exp( Sum_{n>=1} [Sum_{k=0..2n} C(2n,k)^2 x^k] x^n/n ).