A333181 - cp's OEIS frontend

A333181 G.f.: Sum_{k>=1} (k * x^(k(k+1)) Product_{j=1..k} (1 + x^j)).

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

[0, 0, 1, 1, 0, 0, 2, 2, 2, 2, 0, 0, 3, 3, 3, 6, 3, 3, 3, 0, 4, 4, 4, 8, 8, 8, 8, 8, 4, 4, 9, 5, 5, 10, 10, 15, 15, 15, 15, 15, 15, 10, 16, 11, 11, 17, 12, 18, 24, 24, 24, 30, 30, 30, 30, 24, 31, 31, 25, 26, 26, 27, 34, 41, 35, 42, 49, 49, 56, 56, 56, 56, 64]

cp's OEIS Frontend

A333181 G.f.: Sum_{k>=1} (k * x^(k(k+1)) Product_{j=1..k} (1 + x^j)).

Table of values

List of values

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

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

cp's OEIS Frontend

A333181 G.f.: Sum_{k>=1} (k * x^(k*(k+1)) * Product_{j=1..k} (1 + x^j)).

Table of values

List of values

A333181 G.f.: Sum_{k>=1} (k * x^(k(k+1)) Product_{j=1..k} (1 + x^j)).

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