A224885 - cp's OEIS frontend

A224885 G.f.: A(x) = 1+x + Sum_{n>=2} Product_{k=1..n} (A(x)^k - 1).

n	a(n)
0	1
1	1
2	2
3	15
4	143
5	1552
6	18282
7	228174
8	2976534
9	40256580
10	561755676
11	8066942027
12	119104886610
13	1809118800204
14	28327453520403
15	458854209551159
16	7727223037965079
17	136130623466875012
18	2526349854311842166
19	49724570281877830993
20	1043539871136604436514
21	23417606258398828845811

[1, 1, 2, 15, 143, 1552, 18282, 228174, 2976534, 40256580, 561755676, 8066942027, 119104886610, 1809118800204, 28327453520403, 458854209551159, 7727223037965079, 136130623466875012, 2526349854311842166, 49724570281877830993, 1043539871136604436514, 23417606258398828845811]

cp's OEIS Frontend

A224885 G.f.: A(x) = 1+x + Sum_{n>=2} Product_{k=1..n} (A(x)^k - 1).

Table of values

List of values