A115605 - cp's OEIS frontend

A115605 Expansion of -x^2(2 + x - 2x^2 - x^3 + 2x^4) / ( (x-1)(1+x)(1 + x + x^2)(x^2 - x + 1)(x^2 + 4x - 1)*(x^2 - x - 1) ).

n	a(n)
0	0
1	0
2	2
3	7
4	31
5	128
6	549
7	2315
8	9826
9	41594
10	176242
11	746496
12	3162334
13	13395658
14	56745250
15	240376201
16	1018250793
17	4313378176
18	18271765435
19	77400436781
20	327873517634
21	1388894499108
22	5883451527348
23	24922700587008

[0, 0, 2, 7, 31, 128, 549, 2315, 9826, 41594, 176242, 746496, 3162334, 13395658, 56745250, 240376201, 1018250793, 4313378176, 18271765435, 77400436781, 327873517634, 1388894499108, 5883451527348, 24922700587008]

cp's OEIS Frontend

A115605 Expansion of -x^2(2 + x - 2x^2 - x^3 + 2x^4) / ( (x-1)(1+x)(1 + x + x^2)(x^2 - x + 1)(x^2 + 4x - 1)*(x^2 - x - 1) ).

Table of values

List of values

cp's OEIS Frontend

A115605 Expansion of -x^2*(2 + x - 2*x^2 - x^3 + 2*x^4) / ( (x-1)*(1+x)*(1 + x + x^2)*(x^2 - x + 1)*(x^2 + 4*x - 1)*(x^2 - x - 1) ).

Table of values

List of values

A115605 Expansion of -x^2(2 + x - 2x^2 - x^3 + 2x^4) / ( (x-1)(1+x)(1 + x + x^2)(x^2 - x + 1)(x^2 + 4x - 1)*(x^2 - x - 1) ).