A113927 - cp's OEIS frontend

A113927 a(1)=1, and recursively a(n+1) is the smallest prime p of the form p = 2*a(n) + 5^k for some k>0.

n	a(n)
1	1
2	7
3	19
4	43
5	211
6	547
7	4219
8	8443
9	17011
10	34147
11	71419
12	142963
13	1220989051
14	3662681227
15	19080811690579
16	38161623381163
17	76324467465451
18	152648936884027
19	305299094471179
20	4656613483675581520483

[1, 7, 19, 43, 211, 547, 4219, 8443, 17011, 34147, 71419, 142963, 1220989051, 3662681227, 19080811690579, 38161623381163, 76324467465451, 152648936884027, 305299094471179, 4656613483675581520483]

cp's OEIS Frontend

A113927 a(1)=1, and recursively a(n+1) is the smallest prime p of the form p = 2*a(n) + 5^k for some k>0.

Table of values

List of values