

A295052


Smallest b > n+2 such that n*b^n + 1 is a generalized Cullen prime with n > 1 and base b > n+2 or 0 if no such prime exists.


0



6, 10, 0, 8, 14, 30, 12, 14, 132, 42, 143, 60, 30, 22, 170, 30, 665, 198, 42, 200, 138, 104, 115, 34, 84, 0, 1740, 54, 403, 130, 150, 134, 58, 72, 111, 778, 204, 174, 1681, 108, 344, 178, 585, 86, 7426, 904, 133, 234, 63, 1376, 114, 108
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OFFSET

2,1


COMMENTS

No prime found for n = 4, 27, 64.
Record values: a(3)=10, a(7)=30, a(10)=132, a(12)=143, a(16)=170, a(18)=665, a(28)=1740, a(46)=7426, a(66)=19899, a(100)=21412, a(112)=52601.


LINKS

Table of n, a(n) for n=2..53.


CROSSREFS

Cf. A210339.
Sequence in context: A004075 A202951 A316633 * A343369 A052193 A347632
Adjacent sequences: A295049 A295050 A295051 * A295053 A295054 A295055


KEYWORD

nonn


AUTHOR

Pierre CAMI, Nov 13 2017


STATUS

approved



