A238531 - cp's OEIS frontend

A238531 Expansion of (1 - x + x^2)^2 / (1 - x)^3 in powers of x.

n	a(n)
0	1
1	1
2	3
3	5
4	8
5	12
6	17
7	23
8	30
9	38
10	47
11	57
12	68
13	80
14	93
15	107
16	122
17	138
18	155
19	173
20	192
21	212
22	233
23	255
24	278
25	302
26	327
27	353
28	380
29	408
30	437
31	467
32	498
33	530
34	563
35	597
36	632
37	668
38	705
39	743
40	782
41	822
42	863
43	905
44	948
45	992
46	1037
47	1083
48	1130
49	1178
50	1227
51	1277
52	1328
53	1380

[1, 1, 3, 5, 8, 12, 17, 23, 30, 38, 47, 57, 68, 80, 93, 107, 122, 138, 155, 173, 192, 212, 233, 255, 278, 302, 327, 353, 380, 408, 437, 467, 498, 530, 563, 597, 632, 668, 705, 743, 782, 822, 863, 905, 948, 992, 1037, 1083, 1130, 1178, 1227, 1277, 1328, 1380]

cp's OEIS Frontend

A238531 Expansion of (1 - x + x^2)^2 / (1 - x)^3 in powers of x.

Table of values

List of values