A339708 - cp's OEIS frontend

A339708 a(n) is the number of decompositions of 2*n as the sum of an odd prime and a semiprime.

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

[0, 0, 0, 0, 0, 1, 1, 1, 1, 2, 2, 1, 3, 4, 1, 4, 2, 2, 6, 4, 3, 5, 5, 2, 4, 7, 4, 7, 6, 3, 10, 5, 4, 10, 6, 6, 7, 8, 5, 9, 9, 4, 8, 10, 4, 11, 10, 9, 13, 9, 7, 10, 10, 9, 10, 9, 8, 11, 13, 4, 16, 13, 9, 15, 11, 11, 13, 14, 13, 13, 10, 10, 15, 16, 8, 19, 11, 11, 17, 14, 15, 17, 18, 9, 13, 17, 15]

cp's OEIS Frontend

A339708 a(n) is the number of decompositions of 2*n as the sum of an odd prime and a semiprime.

Table of values

List of values

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

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

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