A224712 - cp's OEIS frontend

A224712 The number of unordered partitions {a, b} of n such that a or b is composite and the other is prime.

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

[0, 0, 0, 0, 0, 1, 1, 1, 2, 1, 4, 2, 3, 2, 4, 2, 6, 2, 5, 3, 6, 3, 8, 2, 7, 4, 9, 5, 9, 3, 8, 6, 9, 4, 11, 3, 11, 8, 10, 6, 12, 4, 11, 7, 12, 7, 14, 4, 13, 7, 15, 9, 15, 5, 14, 10, 16, 9, 16, 4, 15, 12, 16, 8, 18, 6, 18, 14, 17, 9, 19, 7, 18, 11, 19, 11, 21]

cp's OEIS Frontend

A224712 The number of unordered partitions {a, b} of n such that a or b is composite and the other is prime.

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

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

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