A376716 - cp's OEIS frontend

A376716 Expansion of (1 - x + x^2)/((1 - x + x^2)^2 - 4*x^2).

n	a(n)
0	1
1	1
2	4
3	11
4	27
5	72
6	189
7	493
8	1292
9	3383
10	8855
11	23184
12	60697
13	158905
14	416020
15	1089155
16	2851443
17	7465176
18	19544085
19	51167077
20	133957148
21	350704367
22	918155951
23	2403763488
24	6293134513
25	16475640049
26	43133785636
27	112925716859
28	295643364939
29	774004377960

[1, 1, 4, 11, 27, 72, 189, 493, 1292, 3383, 8855, 23184, 60697, 158905, 416020, 1089155, 2851443, 7465176, 19544085, 51167077, 133957148, 350704367, 918155951, 2403763488, 6293134513, 16475640049, 43133785636, 112925716859, 295643364939, 774004377960]

cp's OEIS Frontend

A376716 Expansion of (1 - x + x^2)/((1 - x + x^2)^2 - 4*x^2).

Table of values

List of values