A279221 - cp's OEIS frontend

A279221 Expansion of Product_{k>=1} 1/(1 - x^(k^2*(k+1)/2)).

n	a(n)
0	1
1	1
2	1
3	1
4	1
5	1
6	2
7	2
8	2
9	2
10	2
11	2
12	3
13	3
14	3
15	3
16	3
17	3
18	5
19	5
20	5
21	5
22	5
23	5
24	7
25	7
26	7
27	7
28	7
29	7
30	9
31	9
32	9
33	9
34	9
35	9
36	12
37	12
38	12
39	12
40	13
41	13
42	16
43	16
44	16
45	16
46	17
47	17
48	20
49	20
50	20
51	20
52	21
53	21
54	25
55	25
56	25
57	25
58	27
59	27
60	31
61	31
62	31
63	31
64	33
65	33
66	37
67	37
68	37
69	37
70	39
71	39
72	44
73	44
74	44
75	45
76	48
77	48
78	53
79	53
80	54
81	55
82	58
83	58
84	63
85	63
86	64
87	65
88	68
89	68
90	74

[1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 5, 5, 5, 5, 5, 5, 7, 7, 7, 7, 7, 7, 9, 9, 9, 9, 9, 9, 12, 12, 12, 12, 13, 13, 16, 16, 16, 16, 17, 17, 20, 20, 20, 20, 21, 21, 25, 25, 25, 25, 27, 27, 31, 31, 31, 31, 33, 33, 37, 37, 37, 37, 39, 39, 44, 44, 44, 45, 48, 48, 53, 53, 54, 55, 58, 58, 63, 63, 64, 65, 68, 68, 74]

cp's OEIS Frontend

A279221 Expansion of Product_{k>=1} 1/(1 - x^(k^2*(k+1)/2)).

Table of values

List of values

n	a(n)
0	1
1	1
2	1
3	1
4	1
5	1
6	2
7	2
8	2
9	2
10	2
11	2
12	3
13	3
14	3
15	3
16	3
17	3
18	5
19	5
20	5
21	5
22	5
23	5
24	7
25	7
26	7
27	7
28	7
29	7
30	9
31	9
32	9
33	9
34	9
35	9
36	12
37	12
38	12
39	12
40	13
41	13
42	16
43	16
44	16
45	16
46	17
47	17
48	20
49	20
50	20
51	20
52	21
53	21
54	25
55	25
56	25
57	25
58	27
59	27
60	31
61	31
62	31
63	31
64	33
65	33
66	37
67	37
68	37
69	37
70	39
71	39
72	44
73	44
74	44
75	45
76	48
77	48
78	53
79	53
80	54
81	55
82	58
83	58
84	63
85	63
86	64
87	65
88	68
89	68
90	74

n	a(n)
0	1
1	1
2	1
3	1
4	1
5	1
6	2
7	2
8	2
9	2
10	2
11	2
12	3
13	3
14	3
15	3
16	3
17	3
18	5
19	5
20	5
21	5
22	5
23	5
24	7
25	7
26	7
27	7
28	7
29	7
30	9
31	9
32	9
33	9
34	9
35	9
36	12
37	12
38	12
39	12
40	13
41	13
42	16
43	16
44	16
45	16
46	17
47	17
48	20
49	20
50	20
51	20
52	21
53	21
54	25
55	25
56	25
57	25
58	27
59	27
60	31
61	31
62	31
63	31
64	33
65	33
66	37
67	37
68	37
69	37
70	39
71	39
72	44
73	44
74	44
75	45
76	48
77	48
78	53
79	53
80	54
81	55
82	58
83	58
84	63
85	63
86	64
87	65
88	68
89	68
90	74

n	a(n)
0	1
1	1
2	1
3	1
4	1
5	1
6	2
7	2
8	2
9	2
10	2
11	2
12	3
13	3
14	3
15	3
16	3
17	3
18	5
19	5
20	5
21	5
22	5
23	5
24	7
25	7
26	7
27	7
28	7
29	7
30	9
31	9
32	9
33	9
34	9
35	9
36	12
37	12
38	12
39	12
40	13
41	13
42	16
43	16
44	16
45	16
46	17
47	17
48	20
49	20
50	20
51	20
52	21
53	21
54	25
55	25
56	25
57	25
58	27
59	27
60	31
61	31
62	31
63	31
64	33
65	33
66	37
67	37
68	37
69	37
70	39
71	39
72	44
73	44
74	44
75	45
76	48
77	48
78	53
79	53
80	54
81	55
82	58
83	58
84	63
85	63
86	64
87	65
88	68
89	68
90	74