A202012 - cp's OEIS frontend

A202012 Expansion of (1-x+x^2)/((1-x)(1-x-x^2-x^3)).

n	a(n)
0	1
1	1
2	3
3	6
4	11
5	21
6	39
7	72
8	133
9	245
10	451
11	830
12	1527
13	2809
14	5167
15	9504
16	17481
17	32153
18	59139
19	108774
20	200067
21	367981
22	676823
23	1244872
24	2289677
25	4211373
26	7745923
27	14246974
28	26204271
29	48197169
30	88648415
31	163049856

[1, 1, 3, 6, 11, 21, 39, 72, 133, 245, 451, 830, 1527, 2809, 5167, 9504, 17481, 32153, 59139, 108774, 200067, 367981, 676823, 1244872, 2289677, 4211373, 7745923, 14246974, 26204271, 48197169, 88648415, 163049856]

cp's OEIS Frontend

A202012 Expansion of (1-x+x^2)/((1-x)(1-x-x^2-x^3)).

Table of values

List of values