A182970 - cp's OEIS frontend

A182970 G.f.: A(x) = Product_{n>=1} 1/(1 - A_n(x)^n) where A_n(x) denotes the n-th iteration of A(x): A_n(x) = A_{n-1}(A(x)) with A_0(x)=x.

n	a(n)
1	1
2	1
3	3
4	12
5	61
6	365
7	2477
8	18566
9	150940
10	1314016
11	12135518
12	118077620
13	1204031386
14	12814054072
15	141872524160
16	1629774749836
17	19383459694769
18	238243063976805
19	3021510752477432
20	39488027180606978
21	531178015089101579
22	7346877516617129889

[1, 1, 3, 12, 61, 365, 2477, 18566, 150940, 1314016, 12135518, 118077620, 1204031386, 12814054072, 141872524160, 1629774749836, 19383459694769, 238243063976805, 3021510752477432, 39488027180606978, 531178015089101579, 7346877516617129889]

cp's OEIS Frontend

A182970 G.f.: A(x) = Product_{n>=1} 1/(1 - A_n(x)^n) where A_n(x) denotes the n-th iteration of A(x): A_n(x) = A_{n-1}(A(x)) with A_0(x)=x.

Table of values

List of values