A327747 - cp's OEIS frontend

A327747 Expansion of Product_{i>=1, j>=1} 1 / (1 + (-x)^(i*j^2)).

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

[1, 1, 0, 1, 0, 0, 1, 0, 1, 2, 2, 1, 1, 0, 1, 2, 1, 2, 2, 2, 1, 1, 1, 2, 3, 4, 3, 4, 4, 1, 4, 3, 4, 7, 6, 7, 6, 4, 5, 5, 7, 9, 9, 9, 8, 7, 7, 7, 10, 14, 13, 12, 14, 10, 12, 16, 13, 20, 19, 20, 20, 16, 18, 20, 22, 26, 27, 27, 28, 23, 26, 25, 31, 38, 36, 40]

cp's OEIS Frontend

A327747 Expansion of Product_{i>=1, j>=1} 1 / (1 + (-x)^(i*j^2)).

Table of values

List of values

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

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

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