A039994 - cp's OEIS frontend

A039994 Number of primes embedded in decimal expansion of prime(n) as substrings.

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

[1, 1, 1, 1, 1, 2, 2, 1, 3, 2, 2, 3, 1, 2, 2, 3, 2, 1, 2, 2, 3, 2, 2, 1, 2, 2, 3, 3, 2, 4, 4, 5, 6, 4, 2, 3, 4, 3, 4, 6, 5, 2, 3, 4, 5, 2, 3, 4, 3, 3, 4, 5, 3, 3, 4, 4, 3, 4, 3, 2, 5, 5, 4, 4, 4, 6, 3, 4, 5, 2, 4, 4, 5, 5, 5, 3, 3, 5, 2, 1, 3, 3, 5, 3, 3, 3, 1, 4, 3, 3, 4, 4, 3, 2, 1, 4, 3, 3, 6, 3, 4, 3, 4, 3, 4]

cp's OEIS Frontend

A039994 Number of primes embedded in decimal expansion of prime(n) as substrings.

Table of values

List of values

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

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

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