A162278 - cp's OEIS frontend

A162278 a(0)=1. For n >= 1, a(n) = the smallest prime either of the form a(n-1)k - 1 or of the form a(n-1)k + 1, for some k >= 2.

n	a(n)
0	1
1	2
2	3
3	5
4	11
5	23
6	47
7	281
8	563
9	2251
10	22511
11	225109
12	450217
13	2701301
14	10805203
15	43220813
16	2333923901
17	18671391209
18	560141736269
19	5601417362689
20	22405669450757
21	448113389015141
22	3584907112121129
23	186415169830298707

[1, 2, 3, 5, 11, 23, 47, 281, 563, 2251, 22511, 225109, 450217, 2701301, 10805203, 43220813, 2333923901, 18671391209, 560141736269, 5601417362689, 22405669450757, 448113389015141, 3584907112121129, 186415169830298707]

cp's OEIS Frontend

A162278 a(0)=1. For n >= 1, a(n) = the smallest prime either of the form a(n-1)k - 1 or of the form a(n-1)k + 1, for some k >= 2.

Table of values

List of values

cp's OEIS Frontend

A162278 a(0)=1. For n >= 1, a(n) = the smallest prime either of the form a(n-1)*k - 1 or of the form a(n-1)*k + 1, for some k >= 2.

Table of values

List of values

A162278 a(0)=1. For n >= 1, a(n) = the smallest prime either of the form a(n-1)k - 1 or of the form a(n-1)k + 1, for some k >= 2.