A375371 - cp's OEIS frontend

A375371 Expansion of 1/( (1 + x)^2 * (1 - x*(1 + x)^2) ).

n	a(n)
0	1
1	-1
2	4
3	-1
4	11
5	7
6	35
7	52
8	138
9	267
10	606
11	1266
12	2758
13	5882
14	12679
15	27185
16	58442
17	125473
18	269561
19	578929
20	1243545
21	2670942
22	5736984
23	12322389
24	26467324
25	56849060
26	122106124
27	262271540
28	563332877
29	1209982051
30	2598919376
31	5582216323
32	11990037159
33	25753389147

[1, -1, 4, -1, 11, 7, 35, 52, 138, 267, 606, 1266, 2758, 5882, 12679, 27185, 58442, 125473, 269561, 578929, 1243545, 2670942, 5736984, 12322389, 26467324, 56849060, 122106124, 262271540, 563332877, 1209982051, 2598919376, 5582216323, 11990037159, 25753389147]

cp's OEIS Frontend

A375371 Expansion of 1/( (1 + x)^2 * (1 - x*(1 + x)^2) ).

Table of values

List of values