

A128031


Numbers k such that (17^k  3^k)/14 is prime.


28




OFFSET

1,1


COMMENTS

All terms are primes.
No other terms < 100000.


LINKS



MATHEMATICA

k=14; Select[ Prime[ Range[1, 200] ], PrimeQ[ ((k+3)^#  3^#)/k ]& ]


PROG



CROSSREFS

Cf. A028491 = numbers n such that (3^n  1)/2 is prime.
Cf. A057468 = numbers n such that 3^n  2^n is prime.
Cf. A059801 = numbers n such that 4^n  3^n is prime.
Cf. A121877 = numbers n such that (5^n  3^n)/2 is a prime.


KEYWORD

hard,more,nonn


AUTHOR



EXTENSIONS



STATUS

approved



