A320775 - cp's OEIS frontend

A320775 a(n) is the least exponent k greater than 1 such that prime(n)^k starts and ends in prime(n).

n	a(n)
1	21
2	41
3	24
4	33
5	171
6	361
7	461
8	471
9	1281
10	1091
11	231
12	221
13	236
14	61
15	861
16	2761
17	241
18	546
19	3261
20	1991
21	6081
22	421
23	9541
24	5731
25	4461
26	1621
27	21501
28	10381
29	5051
30	1301
31	16301
32	30051
33	18601
34	13601
35	3171
36	8991
37	7561
38	3201
39	33501
40	8701
41	17351
42	5601
43	13551
44	901
45	10301
46	871

[21, 41, 24, 33, 171, 361, 461, 471, 1281, 1091, 231, 221, 236, 61, 861, 2761, 241, 546, 3261, 1991, 6081, 421, 9541, 5731, 4461, 1621, 21501, 10381, 5051, 1301, 16301, 30051, 18601, 13601, 3171, 8991, 7561, 3201, 33501, 8701, 17351, 5601, 13551, 901, 10301, 871]

cp's OEIS Frontend

A320775 a(n) is the least exponent k greater than 1 such that prime(n)^k starts and ends in prime(n).

Table of values

List of values