A161516 - cp's OEIS frontend

A161516 Expansion of 1 + 2Sum_{n >= 1} (-q)^n(1 + q^2)(1 + q^4)...(1 + q^(2k - 2))/ ((1 - q)(1 - q^3)...(1 - q^(2n - 1))).

n	a(n)
0	1
1	-2
2	0
3	-2
4	2
5	0
6	2
7	0
8	2
9	-2
10	2
11	0
12	0
13	-2
14	0
15	-4
16	2
17	0
18	0
19	-2
20	0
21	-2
22	2
23	0
24	2
25	-2
26	2
27	0
28	2
29	0
30	2
31	0
32	0
33	-2
34	2
35	-2
36	4
37	0
38	0
39	-2
40	0
41	0
42	0
43	-4
44	0
45	-2
46	2
47	0
48	2
49	-4
50	0
51	0
52	0
53	-2
54	2
55	-2
56	0
57	0
58	2
59	0
60	2
61	-2
62	0
63	-2
64	4
65	0
66	4
67	0
68	0
69	0
70	0
71	-2
72	2
73	0
74	0
75	-2
76	2
77	0
78	4
79	-2

[1, -2, 0, -2, 2, 0, 2, 0, 2, -2, 2, 0, 0, -2, 0, -4, 2, 0, 0, -2, 0, -2, 2, 0, 2, -2, 2, 0, 2, 0, 2, 0, 0, -2, 2, -2, 4, 0, 0, -2, 0, 0, 0, -4, 0, -2, 2, 0, 2, -4, 0, 0, 0, -2, 2, -2, 0, 0, 2, 0, 2, -2, 0, -2, 4, 0, 4, 0, 0, 0, 0, -2, 2, 0, 0, -2, 2, 0, 4, -2]

cp's OEIS Frontend

A161516 Expansion of 1 + 2Sum_{n >= 1} (-q)^n(1 + q^2)(1 + q^4)...(1 + q^(2k - 2))/ ((1 - q)(1 - q^3)...(1 - q^(2n - 1))).

Table of values

List of values

n	a(n)
0	1
1	-2
2	0
3	-2
4	2
5	0
6	2
7	0
8	2
9	-2
10	2
11	0
12	0
13	-2
14	0
15	-4
16	2
17	0
18	0
19	-2
20	0
21	-2
22	2
23	0
24	2
25	-2
26	2
27	0
28	2
29	0
30	2
31	0
32	0
33	-2
34	2
35	-2
36	4
37	0
38	0
39	-2
40	0
41	0
42	0
43	-4
44	0
45	-2
46	2
47	0
48	2
49	-4
50	0
51	0
52	0
53	-2
54	2
55	-2
56	0
57	0
58	2
59	0
60	2
61	-2
62	0
63	-2
64	4
65	0
66	4
67	0
68	0
69	0
70	0
71	-2
72	2
73	0
74	0
75	-2
76	2
77	0
78	4
79	-2

n	a(n)
0	1
1	-2
2	0
3	-2
4	2
5	0
6	2
7	0
8	2
9	-2
10	2
11	0
12	0
13	-2
14	0
15	-4
16	2
17	0
18	0
19	-2
20	0
21	-2
22	2
23	0
24	2
25	-2
26	2
27	0
28	2
29	0
30	2
31	0
32	0
33	-2
34	2
35	-2
36	4
37	0
38	0
39	-2
40	0
41	0
42	0
43	-4
44	0
45	-2
46	2
47	0
48	2
49	-4
50	0
51	0
52	0
53	-2
54	2
55	-2
56	0
57	0
58	2
59	0
60	2
61	-2
62	0
63	-2
64	4
65	0
66	4
67	0
68	0
69	0
70	0
71	-2
72	2
73	0
74	0
75	-2
76	2
77	0
78	4
79	-2

cp's OEIS Frontend

A161516 Expansion of 1 + 2*Sum_{n >= 1} (-q)^n*(1 + q^2)*(1 + q^4)*...*(1 + q^(2*k - 2))/ ((1 - q)*(1 - q^3)*...*(1 - q^(2*n - 1))).

Table of values

List of values

A161516 Expansion of 1 + 2Sum_{n >= 1} (-q)^n(1 + q^2)(1 + q^4)...(1 + q^(2k - 2))/ ((1 - q)(1 - q^3)...(1 - q^(2n - 1))).

n	a(n)
0	1
1	-2
2	0
3	-2
4	2
5	0
6	2
7	0
8	2
9	-2
10	2
11	0
12	0
13	-2
14	0
15	-4
16	2
17	0
18	0
19	-2
20	0
21	-2
22	2
23	0
24	2
25	-2
26	2
27	0
28	2
29	0
30	2
31	0
32	0
33	-2
34	2
35	-2
36	4
37	0
38	0
39	-2
40	0
41	0
42	0
43	-4
44	0
45	-2
46	2
47	0
48	2
49	-4
50	0
51	0
52	0
53	-2
54	2
55	-2
56	0
57	0
58	2
59	0
60	2
61	-2
62	0
63	-2
64	4
65	0
66	4
67	0
68	0
69	0
70	0
71	-2
72	2
73	0
74	0
75	-2
76	2
77	0
78	4
79	-2