A187019 - cp's OEIS frontend

A187019 Coefficient of x^n in expansion of (1+nx+(n+1)x^2)^n.

n	a(n)
0	1
1	1
2	10
3	99
4	1366
5	23525
6	484436
7	11582375
8	314830342
9	9576682569
10	322014499852
11	11851803991115
12	473634489404220
13	20414267521982893
14	943592267071798696
15	46545155813085562575
16	2439857423310573714758

[1, 1, 10, 99, 1366, 23525, 484436, 11582375, 314830342, 9576682569, 322014499852, 11851803991115, 473634489404220, 20414267521982893, 943592267071798696, 46545155813085562575, 2439857423310573714758]

cp's OEIS Frontend

A187019 Coefficient of x^n in expansion of (1+nx+(n+1)x^2)^n.

Table of values

List of values

cp's OEIS Frontend

A187019 Coefficient of x^n in expansion of (1+n*x+(n+1)*x^2)^n.

Table of values

List of values

A187019 Coefficient of x^n in expansion of (1+nx+(n+1)x^2)^n.