A127630 - cp's OEIS frontend

A127630 Expansion of (1+x-x^2-x^3)/(1+x^2)^2.

n	a(n)
0	1
1	1
2	-3
3	-3
4	5
5	5
6	-7
7	-7
8	9
9	9
10	-11
11	-11
12	13
13	13
14	-15
15	-15
16	17
17	17
18	-19
19	-19
20	21
21	21
22	-23
23	-23
24	25
25	25
26	-27
27	-27
28	29
29	29
30	-31
31	-31
32	33
33	33
34	-35
35	-35
36	37
37	37
38	-39
39	-39
40	41
41	41
42	-43
43	-43
44	45
45	45
46	-47
47	-47
48	49
49	49
50	-51
51	-51
52	53
53	53
54	-55
55	-55

[1, 1, -3, -3, 5, 5, -7, -7, 9, 9, -11, -11, 13, 13, -15, -15, 17, 17, -19, -19, 21, 21, -23, -23, 25, 25, -27, -27, 29, 29, -31, -31, 33, 33, -35, -35, 37, 37, -39, -39, 41, 41, -43, -43, 45, 45, -47, -47, 49, 49, -51, -51, 53, 53, -55, -55]

cp's OEIS Frontend

A127630 Expansion of (1+x-x^2-x^3)/(1+x^2)^2.

Table of values

List of values

n	a(n)
0	1
1	1
2	-3
3	-3
4	5
5	5
6	-7
7	-7
8	9
9	9
10	-11
11	-11
12	13
13	13
14	-15
15	-15
16	17
17	17
18	-19
19	-19
20	21
21	21
22	-23
23	-23
24	25
25	25
26	-27
27	-27
28	29
29	29
30	-31
31	-31
32	33
33	33
34	-35
35	-35
36	37
37	37
38	-39
39	-39
40	41
41	41
42	-43
43	-43
44	45
45	45
46	-47
47	-47
48	49
49	49
50	-51
51	-51
52	53
53	53
54	-55
55	-55

n	a(n)
0	1
1	1
2	-3
3	-3
4	5
5	5
6	-7
7	-7
8	9
9	9
10	-11
11	-11
12	13
13	13
14	-15
15	-15
16	17
17	17
18	-19
19	-19
20	21
21	21
22	-23
23	-23
24	25
25	25
26	-27
27	-27
28	29
29	29
30	-31
31	-31
32	33
33	33
34	-35
35	-35
36	37
37	37
38	-39
39	-39
40	41
41	41
42	-43
43	-43
44	45
45	45
46	-47
47	-47
48	49
49	49
50	-51
51	-51
52	53
53	53
54	-55
55	-55

n	a(n)
0	1
1	1
2	-3
3	-3
4	5
5	5
6	-7
7	-7
8	9
9	9
10	-11
11	-11
12	13
13	13
14	-15
15	-15
16	17
17	17
18	-19
19	-19
20	21
21	21
22	-23
23	-23
24	25
25	25
26	-27
27	-27
28	29
29	29
30	-31
31	-31
32	33
33	33
34	-35
35	-35
36	37
37	37
38	-39
39	-39
40	41
41	41
42	-43
43	-43
44	45
45	45
46	-47
47	-47
48	49
49	49
50	-51
51	-51
52	53
53	53
54	-55
55	-55