A228705 - cp's OEIS frontend

A228705 Expansion of (1-2x+4x^2-2x^3+x^4)/((1-x)^4(1+x^2)^2).

n	a(n)
0	1
1	2
2	4
3	10
4	19
5	28
6	40
7	60
8	85
9	110
10	140
11	182
12	231
13	280
14	336
15	408
16	489
17	570
18	660
19	770
20	891
21	1012
22	1144
23	1300
24	1469
25	1638
26	1820
27	2030
28	2255
29	2480
30	2720
31	2992
32	3281
33	3570
34	3876
35	4218
36	4579
37	4940
38	5320
39	5740
40	6181
41	6622
42	7084
43	7590
44	8119
45	8648
46	9200
47	9800
48	10425

[1, 2, 4, 10, 19, 28, 40, 60, 85, 110, 140, 182, 231, 280, 336, 408, 489, 570, 660, 770, 891, 1012, 1144, 1300, 1469, 1638, 1820, 2030, 2255, 2480, 2720, 2992, 3281, 3570, 3876, 4218, 4579, 4940, 5320, 5740, 6181, 6622, 7084, 7590, 8119, 8648, 9200, 9800, 10425]

cp's OEIS Frontend

A228705 Expansion of (1-2x+4x^2-2x^3+x^4)/((1-x)^4(1+x^2)^2).

Table of values

List of values

cp's OEIS Frontend

A228705 Expansion of (1-2*x+4*x^2-2*x^3+x^4)/((1-x)^4*(1+x^2)^2).

Table of values

List of values

A228705 Expansion of (1-2x+4x^2-2x^3+x^4)/((1-x)^4(1+x^2)^2).