A241857 - cp's OEIS frontend

A241857 Number of primes p less than prime(n)-1, such that adding prime(n)-1 and p in binary does not require any carry.

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

[0, 0, 2, 0, 1, 2, 6, 2, 0, 2, 0, 5, 7, 2, 1, 3, 1, 2, 8, 2, 9, 1, 4, 5, 11, 5, 1, 2, 4, 6, 0, 14, 16, 7, 9, 3, 4, 6, 3, 6, 3, 5, 0, 18, 8, 2, 4, 0, 4, 5, 7, 1, 6, 1, 54, 10, 15, 5, 16, 18, 7, 14, 6, 3, 10, 5, 6, 16, 2, 4, 17, 2, 1, 6, 1, 0, 15, 8, 19, 10, 6, 9]

cp's OEIS Frontend

A241857 Number of primes p less than prime(n)-1, such that adding prime(n)-1 and p in binary does not require any carry.

Table of values

List of values

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

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

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