A100887 - cp's OEIS frontend

A100887 Expansion of (-1+2x+2x^2)/((1+x+x^2)(1-x-x^2)).

n	a(n)
0	-1
1	2
2	1
3	0
4	4
5	4
6	5
7	12
8	17
9	26
10	46
11	72
12	115
13	190
14	305
15	492
16	800
17	1292
18	2089
19	3384
20	5473
21	8854
22	14330
23	23184
24	37511
25	60698
26	98209
27	158904
28	257116
29	416020
30	673133
31	1089156
32	1762289
33	2851442
34	4613734
35	7465176
36	12078907
37	19544086
38	31622993
39	51167076

[-1, 2, 1, 0, 4, 4, 5, 12, 17, 26, 46, 72, 115, 190, 305, 492, 800, 1292, 2089, 3384, 5473, 8854, 14330, 23184, 37511, 60698, 98209, 158904, 257116, 416020, 673133, 1089156, 1762289, 2851442, 4613734, 7465176, 12078907, 19544086, 31622993, 51167076]

cp's OEIS Frontend

A100887 Expansion of (-1+2x+2x^2)/((1+x+x^2)(1-x-x^2)).

Table of values

List of values