OFFSET
1,1
COMMENTS
Poulet numbers were obtained for the following values of n: 0, 1, 2, 3, 5, 6, 8, 9, 14, 15, 16, 17, 20, 21, 23, 27, 29, 33, 35, 37, 42, 43, 50, 54, 61, 64, 65, 67, 69.
Conjecture: There are infinitely many Poulet numbers of the form 7200*n^2 + 8820*n + 2701.
LINKS
Charles R Greathouse IV, Table of n, a(n) for n = 1..10000
Eric Weisstein's World of Mathematics, Poulet Number
PROG
(PARI) forstep(n=0, 1e4, 60, t=2*n^2+147*n+2701; if(Mod(2, t)^t==2, print1(t", "))) \\ Charles R Greathouse IV, Dec 08 2014
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Marius Coman, Jul 01 2012
STATUS
approved