A261440 - cp's OEIS frontend

A261440 Array of coefficients A(n,k) of the formal power series P(n,x) read by upwards antidiagonals, where P(n,x) = Sum_{k>=0} A(n,k)x^k = 1+xP(n,x)^(1n)+x^2P(n,x)^(2*n) for n >= 0.

n	a(n)
0	1
1	1
2	1
3	1
4	1
5	1
6	1
7	1
8	2
9	0
10	1
11	1
12	3
13	4
14	0
15	1
16	1
17	4
18	11
19	9
20	0
21	1
22	1
23	5
24	21
25	46
26	21
27	0
28	1
29	1
30	6
31	34
32	127
33	207
34	51
35	0
36	1
37	1
38	7
39	50
40	268
41	833
42	979
43	127
44	0
45	1
46	1
47	8
48	69
49	485
50	2299
51	5763
52	4797
53	323
54	0
55	1
56	1
57	9
58	91
59	794
60	5130
61	20838
62	41401
63	24138
64	835
65	0

[1, 1, 1, 1, 1, 1, 1, 1, 2, 0, 1, 1, 3, 4, 0, 1, 1, 4, 11, 9, 0, 1, 1, 5, 21, 46, 21, 0, 1, 1, 6, 34, 127, 207, 51, 0, 1, 1, 7, 50, 268, 833, 979, 127, 0, 1, 1, 8, 69, 485, 2299, 5763, 4797, 323, 0, 1, 1, 9, 91, 794, 5130, 20838, 41401, 24138, 835, 0]

cp's OEIS Frontend

A261440 Array of coefficients A(n,k) of the formal power series P(n,x) read by upwards antidiagonals, where P(n,x) = Sum_{k>=0} A(n,k)x^k = 1+xP(n,x)^(1n)+x^2P(n,x)^(2*n) for n >= 0.

Table of values

List of values

cp's OEIS Frontend

A261440 Array of coefficients A(n,k) of the formal power series P(n,x) read by upwards antidiagonals, where P(n,x) = Sum_{k>=0} A(n,k)*x^k = 1+x*P(n,x)^(1*n)+x^2*P(n,x)^(2*n) for n >= 0.

Table of values

List of values

A261440 Array of coefficients A(n,k) of the formal power series P(n,x) read by upwards antidiagonals, where P(n,x) = Sum_{k>=0} A(n,k)x^k = 1+xP(n,x)^(1n)+x^2P(n,x)^(2*n) for n >= 0.