A181145 - cp's OEIS frontend

A181145 G.f.: exp( Sum_{n>=1} [Sum_{k=0..2n} C(2n,k)^2y^k]x^n/n ) = Sum_{n>=0,k=0..2n} T(n,k)x^ny^k, as a triangle of coefficients T(n,k) read by rows.

n	a(n)
0	1
1	1
2	4
3	1
4	1
5	12
6	27
7	12
8	1
9	1
10	24
11	134
12	236
13	134
14	24
15	1
16	1
17	40
18	410
19	1540
20	2380
21	1540
22	410
23	40
24	1
25	1
26	60
27	975
28	6260
29	18386
30	26216
31	18386
32	6260
33	975
34	60
35	1
36	1
37	84
38	1981
39	19320
40	91441
41	227052
42	306495
43	227052
44	91441
45	19320
46	1981
47	84
48	1
49	1
50	112
51	3612
52	49672

[1, 1, 4, 1, 1, 12, 27, 12, 1, 1, 24, 134, 236, 134, 24, 1, 1, 40, 410, 1540, 2380, 1540, 410, 40, 1, 1, 60, 975, 6260, 18386, 26216, 18386, 6260, 975, 60, 1, 1, 84, 1981, 19320, 91441, 227052, 306495, 227052, 91441, 19320, 1981, 84, 1, 1, 112, 3612, 49672]

cp's OEIS Frontend

A181145 G.f.: exp( Sum_{n>=1} [Sum_{k=0..2n} C(2n,k)^2y^k]x^n/n ) = Sum_{n>=0,k=0..2n} T(n,k)x^ny^k, as a triangle of coefficients T(n,k) read by rows.

Table of values

List of values

cp's OEIS Frontend

A181145 G.f.: exp( Sum_{n>=1} [Sum_{k=0..2n} C(2n,k)^2*y^k]*x^n/n ) = Sum_{n>=0,k=0..2n} T(n,k)*x^n*y^k, as a triangle of coefficients T(n,k) read by rows.

Table of values

List of values

A181145 G.f.: exp( Sum_{n>=1} [Sum_{k=0..2n} C(2n,k)^2y^k]x^n/n ) = Sum_{n>=0,k=0..2n} T(n,k)x^ny^k, as a triangle of coefficients T(n,k) read by rows.