OFFSET
1,2
COMMENTS
Values corresponding to 38, 68, 88, 158, 200, 248, 1076, 1252 and 1586 (758 digits) have been certified prime with Primo. There are no other terms <= 6000.
EXAMPLE
Primes 13,101,72173,649541 are 11*3^0+2, 11*3^2+2, 11*3^8+2, 11*3^10+2.
PROG
(PARI) for(n=0, 6000, if(isprime(11*3^n+2), print1(n, ", ")))
CROSSREFS
KEYWORD
nonn
AUTHOR
Rick L. Shepherd, May 14 2003
STATUS
approved