OFFSET
1,1
COMMENTS
Note that in this sequence, 6k+1 and 24k+1 do not have to be prime.
Note: There are just 9 Chernick numbers in the first 1000 Carmichael numbers and there are 30 numbers of the form (6k+1)*(24k+1) in the first 1000 Poulet numbers!
LINKS
Charles R Greathouse IV, Table of n, a(n) for n = 1..10000
E. W. Weisstein, Poulet Number
PROG
(PARI) list(lim)=lim\=1; my(v=List(), n, k=2); while(k++ && (n=(6*k+1)*(24*k+1))<=lim, if(Mod(2, n)^n==2, listput(v, n))); Vec(v) \\ Charles R Greathouse IV, Jun 29 2017
CROSSREFS
KEYWORD
nonn
AUTHOR
Marius Coman, Apr 13 2012
EXTENSIONS
Terms corrected by Charles R Greathouse IV, Oct 02 2012
STATUS
approved