A307971 - cp's OEIS frontend

A307971 G.f. A(x) satisfies: A(x) = 1 + x + x^2 + x^3 + x^4*A(x)^2.

n	a(n)
0	1
1	1
2	1
3	1
4	1
5	2
6	3
7	4
8	5
9	8
10	13
11	20
12	29
13	44
14	70
15	112
16	175
17	272
18	430
19	690
20	1107
21	1766
22	2822
23	4542
24	7347
25	11886
26	19222
27	31150
28	50647
29	82518
30	134542
31	219542
32	358808
33	587430
34	962898
35	1579686
36	2593967
37	4264292
38	7017800
39	11559548
40	19055420
41	31437318
42	51908076
43	85775954
44	141841207

[1, 1, 1, 1, 1, 2, 3, 4, 5, 8, 13, 20, 29, 44, 70, 112, 175, 272, 430, 690, 1107, 1766, 2822, 4542, 7347, 11886, 19222, 31150, 50647, 82518, 134542, 219542, 358808, 587430, 962898, 1579686, 2593967, 4264292, 7017800, 11559548, 19055420, 31437318, 51908076, 85775954, 141841207]

cp's OEIS Frontend

A307971 G.f. A(x) satisfies: A(x) = 1 + x + x^2 + x^3 + x^4*A(x)^2.

Table of values

List of values