A373687 - cp's OEIS frontend

A373687 a(n) is the number of ways n can be written as a sum of a practical number and two pentagonal numbers.

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

[1, 2, 2, 2, 1, 3, 3, 3, 2, 2, 2, 3, 3, 5, 1, 3, 3, 6, 3, 3, 4, 3, 3, 5, 6, 5, 1, 6, 6, 7, 4, 4, 5, 4, 5, 6, 6, 6, 3, 7, 7, 10, 5, 5, 5, 6, 5, 8, 4, 5, 4, 9, 8, 8, 7, 7, 5, 8, 8, 9, 4, 6, 6, 11, 8, 8, 7, 7, 6, 6, 9, 12, 5, 8, 8, 12, 10, 8, 9, 7]

cp's OEIS Frontend

A373687 a(n) is the number of ways n can be written as a sum of a practical number and two pentagonal numbers.

Table of values

List of values

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

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

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