A210722 - cp's OEIS frontend

A210722 Number of ways to write n = (2-(n mod 2))p+q+2^k with p, q-1, q+1 all prime, and p-1, p+1, q all practical.

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

[0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 3, 1, 4, 2, 4, 2, 4, 3, 4, 4, 3, 4, 5, 3, 8, 5, 8, 4, 5, 4, 5, 3, 5, 4, 4, 3, 9, 2, 12, 4, 9, 5, 7, 6, 7, 5, 5, 7, 10, 5, 13, 6, 10, 6, 8, 6, 7, 5, 1, 7, 7, 1, 10, 5, 8, 4, 9, 7, 8, 6, 3, 10, 6, 6, 10, 7, 7, 9, 11, 7, 10, 10, 5, 10, 7, 5, 10, 7, 4, 8, 8, 5, 11, 5, 8, 10, 7, 5, 12, 5]

cp's OEIS Frontend

A210722 Number of ways to write n = (2-(n mod 2))p+q+2^k with p, q-1, q+1 all prime, and p-1, p+1, q 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	0
11	3
12	1
13	4
14	2
15	4
16	2
17	4
18	3
19	4
20	4
21	3
22	4
23	5
24	3
25	8
26	5
27	8
28	4
29	5
30	4
31	5
32	3
33	5
34	4
35	4
36	3
37	9
38	2
39	12
40	4
41	9
42	5
43	7
44	6
45	7
46	5
47	5
48	7
49	10
50	5
51	13
52	6
53	10
54	6
55	8
56	6
57	7
58	5
59	1
60	7
61	7
62	1
63	10
64	5
65	8
66	4
67	9
68	7
69	8
70	6
71	3
72	10
73	6
74	6
75	10
76	7
77	7
78	9
79	11
80	7
81	10
82	10
83	5
84	10
85	7
86	5
87	10
88	7
89	4
90	8
91	8
92	5
93	11
94	5
95	8
96	10
97	7
98	5
99	12
100	5

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

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