A232548 - cp's OEIS frontend

A232548 Number of ways to write n = p - pi(p) + 2^k + 2^m with 0 < k <= m, where p is an odd prime and pi(p) is the number of primes not exceeding p.

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

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

cp's OEIS Frontend

A232548 Number of ways to write n = p - pi(p) + 2^k + 2^m with 0 < k <= m, where p is an odd prime and pi(p) is the number of primes not exceeding p.

Table of values

List of values

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

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

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