A283929 - cp's OEIS frontend

A283929 Number of ways of writing n as a sum of a twin prime (A001097) and a squarefree semiprime (A006881).

n	a(n)
0	0
1	0
2	0
3	0
4	0
5	0
6	0
7	0
8	0
9	1
10	0
11	1
12	0
13	2
14	0
15	1
16	0
17	3
18	1
19	2
20	1
21	2
22	1
23	2
24	1
25	3
26	2
27	3
28	2
29	3
30	0
31	2
32	2
33	3
34	2
35	2
36	1
37	3
38	3
39	4
40	3
41	4
42	2
43	3
44	3
45	4
46	4
47	2
48	1
49	3
50	3
51	5
52	4
53	4
54	2
55	3
56	3
57	4
58	4
59	1
60	2
61	1
62	5
63	4
64	5
65	6
66	2
67	4
68	5
69	5
70	4
71	2
72	3
73	2
74	5
75	5
76	6
77	5
78	2
79	4
80	5
81	5
82	6
83	2
84	3
85	4
86	4
87	6
88	5
89	4
90	3
91	3
92	5
93	6
94	8
95	3
96	7
97	4
98	9
99	6
100	6
101	3
102	3
103	3
104	5
105	6
106	7
107	4
108	5
109	3
110	5

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

cp's OEIS Frontend

A283929 Number of ways of writing n as a sum of a twin prime (A001097) and a squarefree semiprime (A006881).

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	0
9	1
10	0
11	1
12	0
13	2
14	0
15	1
16	0
17	3
18	1
19	2
20	1
21	2
22	1
23	2
24	1
25	3
26	2
27	3
28	2
29	3
30	0
31	2
32	2
33	3
34	2
35	2
36	1
37	3
38	3
39	4
40	3
41	4
42	2
43	3
44	3
45	4
46	4
47	2
48	1
49	3
50	3
51	5
52	4
53	4
54	2
55	3
56	3
57	4
58	4
59	1
60	2
61	1
62	5
63	4
64	5
65	6
66	2
67	4
68	5
69	5
70	4
71	2
72	3
73	2
74	5
75	5
76	6
77	5
78	2
79	4
80	5
81	5
82	6
83	2
84	3
85	4
86	4
87	6
88	5
89	4
90	3
91	3
92	5
93	6
94	8
95	3
96	7
97	4
98	9
99	6
100	6
101	3
102	3
103	3
104	5
105	6
106	7
107	4
108	5
109	3
110	5

n	a(n)
0	0
1	0
2	0
3	0
4	0
5	0
6	0
7	0
8	0
9	1
10	0
11	1
12	0
13	2
14	0
15	1
16	0
17	3
18	1
19	2
20	1
21	2
22	1
23	2
24	1
25	3
26	2
27	3
28	2
29	3
30	0
31	2
32	2
33	3
34	2
35	2
36	1
37	3
38	3
39	4
40	3
41	4
42	2
43	3
44	3
45	4
46	4
47	2
48	1
49	3
50	3
51	5
52	4
53	4
54	2
55	3
56	3
57	4
58	4
59	1
60	2
61	1
62	5
63	4
64	5
65	6
66	2
67	4
68	5
69	5
70	4
71	2
72	3
73	2
74	5
75	5
76	6
77	5
78	2
79	4
80	5
81	5
82	6
83	2
84	3
85	4
86	4
87	6
88	5
89	4
90	3
91	3
92	5
93	6
94	8
95	3
96	7
97	4
98	9
99	6
100	6
101	3
102	3
103	3
104	5
105	6
106	7
107	4
108	5
109	3
110	5

n	a(n)
0	0
1	0
2	0
3	0
4	0
5	0
6	0
7	0
8	0
9	1
10	0
11	1
12	0
13	2
14	0
15	1
16	0
17	3
18	1
19	2
20	1
21	2
22	1
23	2
24	1
25	3
26	2
27	3
28	2
29	3
30	0
31	2
32	2
33	3
34	2
35	2
36	1
37	3
38	3
39	4
40	3
41	4
42	2
43	3
44	3
45	4
46	4
47	2
48	1
49	3
50	3
51	5
52	4
53	4
54	2
55	3
56	3
57	4
58	4
59	1
60	2
61	1
62	5
63	4
64	5
65	6
66	2
67	4
68	5
69	5
70	4
71	2
72	3
73	2
74	5
75	5
76	6
77	5
78	2
79	4
80	5
81	5
82	6
83	2
84	3
85	4
86	4
87	6
88	5
89	4
90	3
91	3
92	5
93	6
94	8
95	3
96	7
97	4
98	9
99	6
100	6
101	3
102	3
103	3
104	5
105	6
106	7
107	4
108	5
109	3
110	5