A122918 - cp's OEIS frontend

A122918 Expansion of (1+x)^2/(1+x+x^2)^2.

n	a(n)
0	1
1	0
2	-2
3	2
4	1
5	-4
6	3
7	2
8	-6
9	4
10	3
11	-8
12	5
13	4
14	-10
15	6
16	5
17	-12
18	7
19	6
20	-14
21	8
22	7
23	-16
24	9
25	8
26	-18
27	10
28	9
29	-20
30	11
31	10
32	-22
33	12
34	11
35	-24
36	13
37	12
38	-26
39	14
40	13
41	-28
42	15
43	14
44	-30
45	16
46	15
47	-32
48	17
49	16
50	-34
51	18
52	17
53	-36
54	19
55	18
56	-38

[1, 0, -2, 2, 1, -4, 3, 2, -6, 4, 3, -8, 5, 4, -10, 6, 5, -12, 7, 6, -14, 8, 7, -16, 9, 8, -18, 10, 9, -20, 11, 10, -22, 12, 11, -24, 13, 12, -26, 14, 13, -28, 15, 14, -30, 16, 15, -32, 17, 16, -34, 18, 17, -36, 19, 18, -38]

cp's OEIS Frontend

A122918 Expansion of (1+x)^2/(1+x+x^2)^2.

Table of values

List of values

n	a(n)
0	1
1	0
2	-2
3	2
4	1
5	-4
6	3
7	2
8	-6
9	4
10	3
11	-8
12	5
13	4
14	-10
15	6
16	5
17	-12
18	7
19	6
20	-14
21	8
22	7
23	-16
24	9
25	8
26	-18
27	10
28	9
29	-20
30	11
31	10
32	-22
33	12
34	11
35	-24
36	13
37	12
38	-26
39	14
40	13
41	-28
42	15
43	14
44	-30
45	16
46	15
47	-32
48	17
49	16
50	-34
51	18
52	17
53	-36
54	19
55	18
56	-38

n	a(n)
0	1
1	0
2	-2
3	2
4	1
5	-4
6	3
7	2
8	-6
9	4
10	3
11	-8
12	5
13	4
14	-10
15	6
16	5
17	-12
18	7
19	6
20	-14
21	8
22	7
23	-16
24	9
25	8
26	-18
27	10
28	9
29	-20
30	11
31	10
32	-22
33	12
34	11
35	-24
36	13
37	12
38	-26
39	14
40	13
41	-28
42	15
43	14
44	-30
45	16
46	15
47	-32
48	17
49	16
50	-34
51	18
52	17
53	-36
54	19
55	18
56	-38

n	a(n)
0	1
1	0
2	-2
3	2
4	1
5	-4
6	3
7	2
8	-6
9	4
10	3
11	-8
12	5
13	4
14	-10
15	6
16	5
17	-12
18	7
19	6
20	-14
21	8
22	7
23	-16
24	9
25	8
26	-18
27	10
28	9
29	-20
30	11
31	10
32	-22
33	12
34	11
35	-24
36	13
37	12
38	-26
39	14
40	13
41	-28
42	15
43	14
44	-30
45	16
46	15
47	-32
48	17
49	16
50	-34
51	18
52	17
53	-36
54	19
55	18
56	-38