A072931 - cp's OEIS frontend

A072931 Number of ways to write n as a sum of 2 semiprimes.

n	a(n)
0	0
1	0
2	0
3	0
4	0
5	0
6	0
7	0
8	1
9	0
10	1
11	0
12	1
13	1
14	1
15	1
16	1
17	0
18	2
19	2
20	2
21	1
22	0
23	1
24	2
25	2
26	1
27	1
28	2
29	2
30	3
31	3
32	2
33	0
34	1
35	3
36	3
37	2
38	1
39	3
40	3
41	2
42	3
43	4
44	4
45	2
46	1
47	4
48	5
49	3
50	3
51	1
52	3
53	3
54	2
55	5
56	3
57	2
58	2
59	5
60	6
61	6
62	1
63	3
64	5
65	3
66	4
67	4
68	5
69	3
70	3
71	6
72	7
73	5
74	3
75	3
76	4
77	4
78	4
79	5
80	5
81	3
82	2
83	7
84	7
85	2
86	4
87	4
88	5
89	4
90	6
91	8
92	6
93	3
94	3
95	8
96	7
97	7
98	4
99	6
100	8
101	6
102	5
103	7
104	7
105	2

[0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 0, 1, 1, 1, 1, 1, 0, 2, 2, 2, 1, 0, 1, 2, 2, 1, 1, 2, 2, 3, 3, 2, 0, 1, 3, 3, 2, 1, 3, 3, 2, 3, 4, 4, 2, 1, 4, 5, 3, 3, 1, 3, 3, 2, 5, 3, 2, 2, 5, 6, 6, 1, 3, 5, 3, 4, 4, 5, 3, 3, 6, 7, 5, 3, 3, 4, 4, 4, 5, 5, 3, 2, 7, 7, 2, 4, 4, 5, 4, 6, 8, 6, 3, 3, 8, 7, 7, 4, 6, 8, 6, 5, 7, 7, 2]

cp's OEIS Frontend

A072931 Number of ways to write n as a sum of 2 semiprimes.

Table of values

List of values

n	a(n)
0	0
1	0
2	0
3	0
4	0
5	0
6	0
7	0
8	1
9	0
10	1
11	0
12	1
13	1
14	1
15	1
16	1
17	0
18	2
19	2
20	2
21	1
22	0
23	1
24	2
25	2
26	1
27	1
28	2
29	2
30	3
31	3
32	2
33	0
34	1
35	3
36	3
37	2
38	1
39	3
40	3
41	2
42	3
43	4
44	4
45	2
46	1
47	4
48	5
49	3
50	3
51	1
52	3
53	3
54	2
55	5
56	3
57	2
58	2
59	5
60	6
61	6
62	1
63	3
64	5
65	3
66	4
67	4
68	5
69	3
70	3
71	6
72	7
73	5
74	3
75	3
76	4
77	4
78	4
79	5
80	5
81	3
82	2
83	7
84	7
85	2
86	4
87	4
88	5
89	4
90	6
91	8
92	6
93	3
94	3
95	8
96	7
97	7
98	4
99	6
100	8
101	6
102	5
103	7
104	7
105	2

n	a(n)
0	0
1	0
2	0
3	0
4	0
5	0
6	0
7	0
8	1
9	0
10	1
11	0
12	1
13	1
14	1
15	1
16	1
17	0
18	2
19	2
20	2
21	1
22	0
23	1
24	2
25	2
26	1
27	1
28	2
29	2
30	3
31	3
32	2
33	0
34	1
35	3
36	3
37	2
38	1
39	3
40	3
41	2
42	3
43	4
44	4
45	2
46	1
47	4
48	5
49	3
50	3
51	1
52	3
53	3
54	2
55	5
56	3
57	2
58	2
59	5
60	6
61	6
62	1
63	3
64	5
65	3
66	4
67	4
68	5
69	3
70	3
71	6
72	7
73	5
74	3
75	3
76	4
77	4
78	4
79	5
80	5
81	3
82	2
83	7
84	7
85	2
86	4
87	4
88	5
89	4
90	6
91	8
92	6
93	3
94	3
95	8
96	7
97	7
98	4
99	6
100	8
101	6
102	5
103	7
104	7
105	2

n	a(n)
0	0
1	0
2	0
3	0
4	0
5	0
6	0
7	0
8	1
9	0
10	1
11	0
12	1
13	1
14	1
15	1
16	1
17	0
18	2
19	2
20	2
21	1
22	0
23	1
24	2
25	2
26	1
27	1
28	2
29	2
30	3
31	3
32	2
33	0
34	1
35	3
36	3
37	2
38	1
39	3
40	3
41	2
42	3
43	4
44	4
45	2
46	1
47	4
48	5
49	3
50	3
51	1
52	3
53	3
54	2
55	5
56	3
57	2
58	2
59	5
60	6
61	6
62	1
63	3
64	5
65	3
66	4
67	4
68	5
69	3
70	3
71	6
72	7
73	5
74	3
75	3
76	4
77	4
78	4
79	5
80	5
81	3
82	2
83	7
84	7
85	2
86	4
87	4
88	5
89	4
90	6
91	8
92	6
93	3
94	3
95	8
96	7
97	7
98	4
99	6
100	8
101	6
102	5
103	7
104	7
105	2