A372382 - cp's OEIS frontend

A372382 Coefficient of x^n in the expansion of ( (1+x+x^2)^4 / (1+x)^3 )^n.

n	a(n)
0	1
1	1
2	9
3	25
4	169
5	651
6	3801
7	17053
8	93225
9	450844
10	2396859
11	12043494
12	63354649
13	324888305
14	1704137493
15	8839907475
16	46383701545
17	242285478474
18	1273274074020
19	6681277302239
20	35178613785819
21	185187072845569
22	976888169385302
23	5154978257816280
24	27240094648199961

[1, 1, 9, 25, 169, 651, 3801, 17053, 93225, 450844, 2396859, 12043494, 63354649, 324888305, 1704137493, 8839907475, 46383701545, 242285478474, 1273274074020, 6681277302239, 35178613785819, 185187072845569, 976888169385302, 5154978257816280, 27240094648199961]

cp's OEIS Frontend

A372382 Coefficient of x^n in the expansion of ( (1+x+x^2)^4 / (1+x)^3 )^n.

Table of values

List of values