A238268 - cp's OEIS frontend

A238268 The number of unordered ways that n can be written as the sum of two numbers of the form p or 2p, where p is prime.

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

[1, 1, 2, 2, 3, 3, 3, 2, 3, 3, 3, 3, 4, 4, 3, 3, 4, 4, 3, 3, 5, 4, 4, 4, 5, 4, 4, 3, 4, 6, 4, 3, 7, 4, 3, 5, 6, 5, 5, 5, 6, 7, 4, 4, 9, 5, 5, 7, 6, 5, 5, 4, 5, 7, 4, 3, 10, 4, 4, 8, 8, 7, 7, 5, 6, 8, 5, 4, 10, 5, 5, 9, 8, 7, 8, 5, 7, 9, 5, 4, 13, 8, 6, 8, 8, 7]

cp's OEIS Frontend

A238268 The number of unordered ways that n can be written as the sum of two numbers of the form p or 2p, where p is prime.

Table of values

List of values

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

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

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