A202668 - cp's OEIS frontend

A202668 G.f. satisfies: A(x) = exp( Sum_{n>=1} (A(x) - (-1)^n)^n * x^n/n ).

n	a(n)
0	1
1	2
2	4
3	12
4	42
5	158
6	618
7	2498
8	10360
9	43832
10	188420
11	820608
12	3613212
13	16057640
14	71933768
15	324482500
16	1472604586
17	6719100254
18	30804229858
19	141829955338
20	655541387406
21	3040527731790
22	14147444737654
23	66018910398574
24	308898542610666
25	1448867831911170

[1, 2, 4, 12, 42, 158, 618, 2498, 10360, 43832, 188420, 820608, 3613212, 16057640, 71933768, 324482500, 1472604586, 6719100254, 30804229858, 141829955338, 655541387406, 3040527731790, 14147444737654, 66018910398574, 308898542610666, 1448867831911170]

cp's OEIS Frontend

A202668 G.f. satisfies: A(x) = exp( Sum_{n>=1} (A(x) - (-1)^n)^n * x^n/n ).

Table of values

List of values