A376631 - cp's OEIS frontend

A376631 G.f.: Sum_{k>=0} x^(k(k+1)/2) Product_{j=1..k} (1 + x^(2*j)).

n	a(n)
0	1
1	1
2	0
3	2
4	0
5	1
6	1
7	1
8	1
9	1
10	2
11	0
12	3
13	0
14	2
15	1
16	3
17	1
18	3
19	1
20	2
21	3
22	2
23	3
24	2
25	4
26	1
27	5
28	2
29	5
30	2
31	6
32	1
33	7
34	2
35	7
36	3
37	6
38	4
39	7
40	5
41	6
42	7
43	6
44	7
45	7
46	9
47	5
48	11
49	5
50	12
51	6
52	14
53	5
54	15
55	6
56	16
57	7
58	17
59	7
60	18
61	9
62	18
63	11
64	19
65	12
66	20
67	14
68	19
69	17
70	19
71	19
72	20
73	23
74	18
75	27
76	18
77	29
78	20
79	32
80	19

[1, 1, 0, 2, 0, 1, 1, 1, 1, 1, 2, 0, 3, 0, 2, 1, 3, 1, 3, 1, 2, 3, 2, 3, 2, 4, 1, 5, 2, 5, 2, 6, 1, 7, 2, 7, 3, 6, 4, 7, 5, 6, 7, 6, 7, 7, 9, 5, 11, 5, 12, 6, 14, 5, 15, 6, 16, 7, 17, 7, 18, 9, 18, 11, 19, 12, 20, 14, 19, 17, 19, 19, 20, 23, 18, 27, 18, 29, 20, 32, 19]

cp's OEIS Frontend

A376631 G.f.: Sum_{k>=0} x^(k(k+1)/2) Product_{j=1..k} (1 + x^(2*j)).

Table of values

List of values

n	a(n)
0	1
1	1
2	0
3	2
4	0
5	1
6	1
7	1
8	1
9	1
10	2
11	0
12	3
13	0
14	2
15	1
16	3
17	1
18	3
19	1
20	2
21	3
22	2
23	3
24	2
25	4
26	1
27	5
28	2
29	5
30	2
31	6
32	1
33	7
34	2
35	7
36	3
37	6
38	4
39	7
40	5
41	6
42	7
43	6
44	7
45	7
46	9
47	5
48	11
49	5
50	12
51	6
52	14
53	5
54	15
55	6
56	16
57	7
58	17
59	7
60	18
61	9
62	18
63	11
64	19
65	12
66	20
67	14
68	19
69	17
70	19
71	19
72	20
73	23
74	18
75	27
76	18
77	29
78	20
79	32
80	19

n	a(n)
0	1
1	1
2	0
3	2
4	0
5	1
6	1
7	1
8	1
9	1
10	2
11	0
12	3
13	0
14	2
15	1
16	3
17	1
18	3
19	1
20	2
21	3
22	2
23	3
24	2
25	4
26	1
27	5
28	2
29	5
30	2
31	6
32	1
33	7
34	2
35	7
36	3
37	6
38	4
39	7
40	5
41	6
42	7
43	6
44	7
45	7
46	9
47	5
48	11
49	5
50	12
51	6
52	14
53	5
54	15
55	6
56	16
57	7
58	17
59	7
60	18
61	9
62	18
63	11
64	19
65	12
66	20
67	14
68	19
69	17
70	19
71	19
72	20
73	23
74	18
75	27
76	18
77	29
78	20
79	32
80	19

cp's OEIS Frontend

A376631 G.f.: Sum_{k>=0} x^(k*(k+1)/2) * Product_{j=1..k} (1 + x^(2*j)).

Table of values

List of values

A376631 G.f.: Sum_{k>=0} x^(k(k+1)/2) Product_{j=1..k} (1 + x^(2*j)).

n	a(n)
0	1
1	1
2	0
3	2
4	0
5	1
6	1
7	1
8	1
9	1
10	2
11	0
12	3
13	0
14	2
15	1
16	3
17	1
18	3
19	1
20	2
21	3
22	2
23	3
24	2
25	4
26	1
27	5
28	2
29	5
30	2
31	6
32	1
33	7
34	2
35	7
36	3
37	6
38	4
39	7
40	5
41	6
42	7
43	6
44	7
45	7
46	9
47	5
48	11
49	5
50	12
51	6
52	14
53	5
54	15
55	6
56	16
57	7
58	17
59	7
60	18
61	9
62	18
63	11
64	19
65	12
66	20
67	14
68	19
69	17
70	19
71	19
72	20
73	23
74	18
75	27
76	18
77	29
78	20
79	32
80	19