A122941 - cp's OEIS frontend

A122941 Rectangular table, read by antidiagonals, where the g.f. of row n is Sum_{i>=0} F_i(x)^n / 2^(i+1), where F_0(x)=x, F_{n+1}(x) = F_n(x+x^2), for n>=1.

n	a(n)
1	1
2	1
3	1
4	1
5	2
6	2
7	1
8	3
9	7
10	7
11	1
12	4
13	15
14	34
15	34
16	1
17	5
18	26
19	94
20	214
21	214
22	1
23	6
24	40
25	200
26	726
27	1652
28	1652
29	1
30	7
31	57
32	365
33	1831
34	6645
35	15121
36	15121
37	1
38	8
39	77
40	602
41	3865
42	19388
43	70361
44	160110
45	160110
46	1
47	9
48	100
49	924
50	7239
51	46481
52	233154
53	846144
54	1925442
55	1925442
56	1

[1, 1, 1, 1, 2, 2, 1, 3, 7, 7, 1, 4, 15, 34, 34, 1, 5, 26, 94, 214, 214, 1, 6, 40, 200, 726, 1652, 1652, 1, 7, 57, 365, 1831, 6645, 15121, 15121, 1, 8, 77, 602, 3865, 19388, 70361, 160110, 160110, 1, 9, 100, 924, 7239, 46481, 233154, 846144, 1925442, 1925442, 1]

cp's OEIS Frontend

A122941 Rectangular table, read by antidiagonals, where the g.f. of row n is Sum_{i>=0} F_i(x)^n / 2^(i+1), where F_0(x)=x, F_{n+1}(x) = F_n(x+x^2), for n>=1.

Table of values

List of values