A119471 - cp's OEIS frontend

A119471 G.f. A(x) equals the limit of the composition of functions (x+x^n) in reverse order; let F_1(x) = x, F_{n+1}(x) = F_n(x) + F_n(x)^(n+1), then A(x) = limit F_n(x): A(x) = ...o x+x^n o ... o x+x^3 o x+x^2 o x.

n	a(n)
1	1
2	1
3	1
4	4
5	8
6	17
7	50
8	146
9	399
10	1087
11	3042
12	8741
13	25509
14	75259
15	223529
16	665215
17	1983226
18	5931158
19	17800505
20	53627756
21	162206221
22	492399027
23	1499501067
24	4579193127
25	14017819056
26	43001141630
27	132154209754
28	406818719006

[1, 1, 1, 4, 8, 17, 50, 146, 399, 1087, 3042, 8741, 25509, 75259, 223529, 665215, 1983226, 5931158, 17800505, 53627756, 162206221, 492399027, 1499501067, 4579193127, 14017819056, 43001141630, 132154209754, 406818719006]

cp's OEIS Frontend

A119471 G.f. A(x) equals the limit of the composition of functions (x+x^n) in reverse order; let F_1(x) = x, F_{n+1}(x) = F_n(x) + F_n(x)^(n+1), then A(x) = limit F_n(x): A(x) = ...o x+x^n o ... o x+x^3 o x+x^2 o x.

Table of values

List of values