A208246 - cp's OEIS frontend

A208246 Number of ways to write n = p+q with p prime or practical, and q-4, q, q+4 all practical.

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

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

cp's OEIS Frontend

A208246 Number of ways to write n = p+q with p prime or practical, and q-4, q, q+4 all practical.

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

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

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