A266146 - cp's OEIS frontend

A266146 Number of n-digit primes in which n-1 of the digits are 7's.

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

[4, 8, 10, 9, 12, 11, 8, 4, 9, 9, 10, 14, 14, 11, 16, 7, 10, 17, 7, 10, 9, 12, 9, 13, 11, 10, 14, 5, 3, 22, 6, 13, 13, 10, 8, 16, 8, 6, 16, 8, 13, 14, 8, 7, 8, 13, 9, 11, 13, 9, 14, 8, 4, 23, 13, 11, 8, 8, 8, 12, 13, 13, 11, 11, 10, 23, 11, 8, 8, 3, 6, 16, 12, 13, 12, 12, 8, 11, 8, 11, 14, 13, 7, 15, 12, 17, 11, 7, 9, 21, 6, 6, 11, 12, 6, 14, 14, 12, 13, 12, 11, 17, 10, 17, 18]

cp's OEIS Frontend

A266146 Number of n-digit primes in which n-1 of the digits are 7's.

Table of values

List of values

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

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

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