A166898 - cp's OEIS frontend

A166898 G.f.: exp( Sum_{n>=1} [Sum_{k=0..n} C(n,k)^4 * x^k] * x^n/n ), an integer series in x.

n	a(n)
0	1
1	1
2	2
3	10
4	38
5	137
6	646
7	3241
8	15623
9	79439
10	427562
11	2317396
12	12715372
13	71543343
14	408543758
15	2353591560
16	13717994046
17	80827739181
18	480016288156
19	2871701561720
20	17304832805996
21	104933348346951
22	639814473417775

[1, 1, 2, 10, 38, 137, 646, 3241, 15623, 79439, 427562, 2317396, 12715372, 71543343, 408543758, 2353591560, 13717994046, 80827739181, 480016288156, 2871701561720, 17304832805996, 104933348346951, 639814473417775]

cp's OEIS Frontend

A166898 G.f.: exp( Sum_{n>=1} [Sum_{k=0..n} C(n,k)^4 * x^k] * x^n/n ), an integer series in x.

Table of values

List of values