A141100 - cp's OEIS frontend

A141100 Number of unordered pairs of odd composite numbers that sum to 2n.

n	a(n)
1	0
2	0
3	0
4	0
5	0
6	0
7	0
8	0
9	1
10	0
11	0
12	1
13	0
14	0
15	2
16	0
17	1
18	2
19	0
20	1
21	3
22	1
23	1
24	3
25	2
26	1
27	4
28	1
29	2
30	5
31	1
32	3
33	5
34	1
35	4
36	5
37	3
38	3
39	6
40	3
41	3
42	7
43	3
44	3
45	9
46	3
47	4
48	7
49	4
50	6
51	9
52	5
53	5
54	8
55	6
56	6
57	10
58	5
59	5
60	12
61	4
62	6
63	12
64	5
65	9
66	11
67	7
68	7
69	11
70	9
71	9
72	13
73	8
74	8
75	16
76	7
77	11
78	14
79	8
80	11
81	14
82	9
83	9
84	17
85	13
86	10
87	16
88	11
89	11
90	19
91	11
92	12
93	18
94	10

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

cp's OEIS Frontend

A141100 Number of unordered pairs of odd composite numbers that sum to 2n.

Table of values

List of values

n	a(n)
1	0
2	0
3	0
4	0
5	0
6	0
7	0
8	0
9	1
10	0
11	0
12	1
13	0
14	0
15	2
16	0
17	1
18	2
19	0
20	1
21	3
22	1
23	1
24	3
25	2
26	1
27	4
28	1
29	2
30	5
31	1
32	3
33	5
34	1
35	4
36	5
37	3
38	3
39	6
40	3
41	3
42	7
43	3
44	3
45	9
46	3
47	4
48	7
49	4
50	6
51	9
52	5
53	5
54	8
55	6
56	6
57	10
58	5
59	5
60	12
61	4
62	6
63	12
64	5
65	9
66	11
67	7
68	7
69	11
70	9
71	9
72	13
73	8
74	8
75	16
76	7
77	11
78	14
79	8
80	11
81	14
82	9
83	9
84	17
85	13
86	10
87	16
88	11
89	11
90	19
91	11
92	12
93	18
94	10

n	a(n)
1	0
2	0
3	0
4	0
5	0
6	0
7	0
8	0
9	1
10	0
11	0
12	1
13	0
14	0
15	2
16	0
17	1
18	2
19	0
20	1
21	3
22	1
23	1
24	3
25	2
26	1
27	4
28	1
29	2
30	5
31	1
32	3
33	5
34	1
35	4
36	5
37	3
38	3
39	6
40	3
41	3
42	7
43	3
44	3
45	9
46	3
47	4
48	7
49	4
50	6
51	9
52	5
53	5
54	8
55	6
56	6
57	10
58	5
59	5
60	12
61	4
62	6
63	12
64	5
65	9
66	11
67	7
68	7
69	11
70	9
71	9
72	13
73	8
74	8
75	16
76	7
77	11
78	14
79	8
80	11
81	14
82	9
83	9
84	17
85	13
86	10
87	16
88	11
89	11
90	19
91	11
92	12
93	18
94	10

n	a(n)
1	0
2	0
3	0
4	0
5	0
6	0
7	0
8	0
9	1
10	0
11	0
12	1
13	0
14	0
15	2
16	0
17	1
18	2
19	0
20	1
21	3
22	1
23	1
24	3
25	2
26	1
27	4
28	1
29	2
30	5
31	1
32	3
33	5
34	1
35	4
36	5
37	3
38	3
39	6
40	3
41	3
42	7
43	3
44	3
45	9
46	3
47	4
48	7
49	4
50	6
51	9
52	5
53	5
54	8
55	6
56	6
57	10
58	5
59	5
60	12
61	4
62	6
63	12
64	5
65	9
66	11
67	7
68	7
69	11
70	9
71	9
72	13
73	8
74	8
75	16
76	7
77	11
78	14
79	8
80	11
81	14
82	9
83	9
84	17
85	13
86	10
87	16
88	11
89	11
90	19
91	11
92	12
93	18
94	10