A323390 - cp's OEIS frontend

A323390 Total number of primes that are both left-truncatable and right-truncatable in base n.

n	a(n)
2	0
3	2
4	3
5	5
6	9
7	7
8	22
9	8
10	15
11	6
12	35
13	11
14	37
15	17
16	22
17	12
18	69
19	12
20	68
21	18
22	44
23	13
24	145
25	16
26	47
27	20
28	77
29	13
30	291
31	15
32	89
33	27
34	74
35	20
36	241
37	18
38	106
39	25
40	134
41	15
42	450
43	23
44	144
45	33
46	131
47	24
48	491
49	27
50	235
51	29
52	187
53	23
54	575
55	30
56	218
57	31
58	183
59	25
60	1377
61	26
62	247
63	37
64	231

[0, 2, 3, 5, 9, 7, 22, 8, 15, 6, 35, 11, 37, 17, 22, 12, 69, 12, 68, 18, 44, 13, 145, 16, 47, 20, 77, 13, 291, 15, 89, 27, 74, 20, 241, 18, 106, 25, 134, 15, 450, 23, 144, 33, 131, 24, 491, 27, 235, 29, 187, 23, 575, 30, 218, 31, 183, 25, 1377, 26, 247, 37, 231]

cp's OEIS Frontend

A323390 Total number of primes that are both left-truncatable and right-truncatable in base n.

Table of values

List of values