A380199 - cp's OEIS frontend

A380199 Smallest number of leading digits of A002110(n) (primorial(n)) that form a prime (or 0 if none exist).

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

[0, 1, 0, 1, 1, 1, 1, 1, 0, 1, 4, 1, 1, 1, 2, 2, 1, 2, 2, 1, 1, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 3, 1, 1, 26, 3, 1, 1, 1, 4, 7, 1, 1, 3, 2, 1, 1, 17, 1, 2, 2, 6, 0, 1, 0, 25, 2, 2, 1, 3, 1, 21, 1, 32, 2, 2, 2, 25, 1, 1, 1, 0, 1, 10, 9, 2, 0, 1, 3, 0, 0, 17, 1, 6]

cp's OEIS Frontend

A380199 Smallest number of leading digits of A002110(n) (primorial(n)) that form a prime (or 0 if none exist).

Table of values

List of values

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

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

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