A171067 - cp's OEIS frontend

A171067 G.f. -x(x-1)(1+x)/((x^2+3x+1)(x^2-4*x+1)).

n	a(n)
0	0
1	1
2	1
3	10
4	21
5	121
6	340
7	1561
8	5061
9	20890
10	72721
11	285121
12	1028160
13	3931201
14	14425201
15	54480250
16	201635301
17	756931801
18	2813339860
19	10529812921
20	39218508021
21	146573045290
22	546474598561
23	2040893746561
24	7612994269440

[0, 1, 1, 10, 21, 121, 340, 1561, 5061, 20890, 72721, 285121, 1028160, 3931201, 14425201, 54480250, 201635301, 756931801, 2813339860, 10529812921, 39218508021, 146573045290, 546474598561, 2040893746561, 7612994269440]

cp's OEIS Frontend

A171067 G.f. -x(x-1)(1+x)/((x^2+3x+1)(x^2-4*x+1)).

Table of values

List of values

cp's OEIS Frontend

A171067 G.f. -x*(x-1)*(1+x)/((x^2+3*x+1)*(x^2-4*x+1)).

Table of values

List of values

A171067 G.f. -x(x-1)(1+x)/((x^2+3x+1)(x^2-4*x+1)).