A199331 - cp's OEIS frontend

A199331 Number of ordered ways of writing n as the sum of two semiprimes.

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

[0, 0, 0, 0, 0, 0, 0, 1, 0, 2, 0, 1, 2, 2, 2, 2, 0, 3, 4, 3, 2, 0, 2, 4, 4, 2, 2, 3, 4, 5, 6, 4, 0, 2, 6, 6, 4, 2, 6, 6, 4, 5, 8, 7, 4, 2, 8, 10, 6, 5, 2, 5, 6, 4, 10, 6, 4, 4, 10, 12, 12, 2, 6, 10, 6, 7, 8, 9, 6, 5, 12, 14, 10, 6, 6, 7, 8, 7, 10, 10, 6, 4, 14, 14]

cp's OEIS Frontend

A199331 Number of ordered ways of writing n as the sum of two semiprimes.

Table of values

List of values

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

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

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