A113131 - cp's OEIS frontend

A113131 a(0) = a(1) = 1, a(2) = x, a(3) = 2x^2, a(n) = x(n-1)a(n-1) + Sum_{j=2..n-2} (j-1)a(j)a(n-j), n>=4 and for x = 4.

n	a(n)
0	1
1	1
2	4
3	32
4	400
5	6784
6	144128
7	3658752
8	107686656
9	3599697920
10	134617038848
11	5567255822336
12	252278661832704
13	12431395516383232
14	661885541595873280
15	37869659304097218560
16	2317293119684500193280
17	151022143036329696952320

[1, 1, 4, 32, 400, 6784, 144128, 3658752, 107686656, 3599697920, 134617038848, 5567255822336, 252278661832704, 12431395516383232, 661885541595873280, 37869659304097218560, 2317293119684500193280, 151022143036329696952320]

cp's OEIS Frontend

A113131 a(0) = a(1) = 1, a(2) = x, a(3) = 2x^2, a(n) = x(n-1)a(n-1) + Sum_{j=2..n-2} (j-1)a(j)a(n-j), n>=4 and for x = 4.

Table of values

List of values

cp's OEIS Frontend

A113131 a(0) = a(1) = 1, a(2) = x, a(3) = 2x^2, a(n) = x*(n-1)*a(n-1) + Sum_{j=2..n-2} (j-1)*a(j)*a(n-j), n>=4 and for x = 4.

Table of values

List of values

A113131 a(0) = a(1) = 1, a(2) = x, a(3) = 2x^2, a(n) = x(n-1)a(n-1) + Sum_{j=2..n-2} (j-1)a(j)a(n-j), n>=4 and for x = 4.