OFFSET
1,1
COMMENTS
Contains primes of form 5k+1 and some composite of form 5k+1 such that (5k+1)/3 is prime.
LINKS
Amiram Eldar, Table of n, a(n) for n = 1..10000
MATHEMATICA
Select[5*Range[0, 250] + 1, Mod[Binomial[# - 1, (# - 1)/5] , #] == 1 &] (* Amiram Eldar, May 08 2022 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
Benoit Cloitre, Feb 07 2004
EXTENSIONS
Offset corrected by Amiram Eldar, May 08 2022
STATUS
approved