A228902 - cp's OEIS frontend

A228902 Triangle defined by g.f. A(x,y) = exp( Sum_{n>=1} x^n/n * Sum_{k=0..n} binomial(n^2, k^2) * y^k ), as read by rows.

n	a(n)
0	1
1	1
2	1
3	1
4	3
5	1
6	1
7	6
8	45
9	1
10	1
11	10
12	505
13	2905
14	1
15	1
16	15
17	3045
18	412044
19	411500
20	1
21	1
22	21
23	12880
24	16106168
25	1218805926
26	100545716
27	1
28	1
29	28
30	43176
31	309616264
32	479536629727
33	9030648908720
34	37614371968
35	1
36	1
37	36
38	122640
39	3752248896
40	61545730104024
41	50139332516318674
42	139855355007409180
43	19977489354808
44	1

[1, 1, 1, 1, 3, 1, 1, 6, 45, 1, 1, 10, 505, 2905, 1, 1, 15, 3045, 412044, 411500, 1, 1, 21, 12880, 16106168, 1218805926, 100545716, 1, 1, 28, 43176, 309616264, 479536629727, 9030648908720, 37614371968, 1, 1, 36, 122640, 3752248896, 61545730104024, 50139332516318674, 139855355007409180, 19977489354808, 1]

cp's OEIS Frontend

A228902 Triangle defined by g.f. A(x,y) = exp( Sum_{n>=1} x^n/n * Sum_{k=0..n} binomial(n^2, k^2) * y^k ), as read by rows.

Table of values

List of values