OFFSET
1,1
COMMENTS
p = prime(n) such that A242830(n) = 3.
PROG
(PARI) forprime(p=1, , b=2; i=0; while(b < p, if(Mod(b, p^2)^(p-1)==1, i++); b++); if(i==3, print1(p, ", ")))
CROSSREFS
KEYWORD
nonn
AUTHOR
Felix Fröhlich, Feb 17 2015
STATUS
approved