OFFSET
1,1
COMMENTS
Poulet numbers were obtained for the following values of n: 2, 3, 4, 6, 9, 10, 11, 14, 22, 43, 59, 64, 66, 71, 79, 94, 99, 102, 123, 128, 143, 151, 156, 166, 168, 183, 196, 238.
Conjecture: There are infinite many Poulet numbers of the form 144*n^2 + 222*n + 85.
LINKS
Charles R Greathouse IV, Table of n, a(n) for n = 1..10000
Eric Weisstein's World of Mathematics, Poulet Number
PROG
(PARI) for(n=2, 1e9, t=144*n^2 + 222*n + 85; if(Mod(2, t)^t==2, print1(t", "))) \\ Charles R Greathouse IV, Dec 07 2014
KEYWORD
nonn
AUTHOR
Marius Coman, Jul 01 2012
EXTENSIONS
Corrected by Charles R Greathouse IV, Dec 07 2014
STATUS
approved