OFFSET
1,1
REFERENCES
Harvey Dubner, Generalized Cullen numbers, J. Recreational Math. 21 (1989), pp. 190-194.
LINKS
Arkadiusz Wesolowski, Table of n, a(n) for n = 1..92
Chris Caldwell, The Top 20 Generalized Cullen Primes
Chris Caldwell, The Prime Glossary, Cullen prime
G. L. Honaker, Jr. and Chris Caldwell, Prime Curios! 57
G. L. Honaker, Jr. and Chris Caldwell, 15545...00001 (1008-digits)
G. L. Honaker, Jr. and Chris Caldwell, 36869...81251 (10002-digits)
PrimeGrid, Home Page
Wikipedia, Cullen number
EXAMPLE
81*2^324 + 1 is a prime number and 81*2^324 + 1 = 81*16^81 + 1, so this number is in the sequence.
MATHEMATICA
lst = {}; Do[p = n*b^n + 1; If[p < 10^200 && PrimeQ[p], AppendTo[lst, p]], {b, 3, 100}, {n, b - 1, 413}]; Sort@lst
CROSSREFS
KEYWORD
nonn
AUTHOR
Arkadiusz Wesolowski, Mar 20 2012
STATUS
approved