A086620 - cp's OEIS frontend

A086620 Symmetric square table of coefficients, read by antidiagonals, where T(n,k) is the coefficient of x^ny^k in f(x,y) that satisfies f(x,y) = 1/(1-x-y) + xyf(x,y)^2.

n	a(n)
0	1
1	1
2	1
3	1
4	3
5	1
6	1
7	5
8	5
9	1
10	1
11	7
12	14
13	7
14	1
15	1
16	9
17	28
18	28
19	9
20	1
21	1
22	11
23	47
24	79
25	47
26	11
27	1
28	1
29	13
30	71
31	175
32	175
33	71
34	13
35	1
36	1
37	15
38	100
39	331
40	504
41	331
42	100
43	15
44	1
45	1
46	17
47	134
48	562
49	1196
50	1196
51	562
52	134
53	17
54	1
55	1
56	19
57	173
58	883
59	2464
60	3514
61	2464
62	883
63	173
64	19
65	1
66	1
67	21
68	217

[1, 1, 1, 1, 3, 1, 1, 5, 5, 1, 1, 7, 14, 7, 1, 1, 9, 28, 28, 9, 1, 1, 11, 47, 79, 47, 11, 1, 1, 13, 71, 175, 175, 71, 13, 1, 1, 15, 100, 331, 504, 331, 100, 15, 1, 1, 17, 134, 562, 1196, 1196, 562, 134, 17, 1, 1, 19, 173, 883, 2464, 3514, 2464, 883, 173, 19, 1, 1, 21, 217]

cp's OEIS Frontend

A086620 Symmetric square table of coefficients, read by antidiagonals, where T(n,k) is the coefficient of x^ny^k in f(x,y) that satisfies f(x,y) = 1/(1-x-y) + xyf(x,y)^2.

Table of values

List of values

cp's OEIS Frontend

A086620 Symmetric square table of coefficients, read by antidiagonals, where T(n,k) is the coefficient of x^n*y^k in f(x,y) that satisfies f(x,y) = 1/(1-x-y) + xy*f(x,y)^2.

Table of values

List of values

A086620 Symmetric square table of coefficients, read by antidiagonals, where T(n,k) is the coefficient of x^ny^k in f(x,y) that satisfies f(x,y) = 1/(1-x-y) + xyf(x,y)^2.