OFFSET
1,1
LINKS
EXAMPLE
10^4 - 51 = 9949 which is a prime number.
MAPLE
A178429:=n->`if`(isprime(10^n-51), n, NULL): seq(A178429(n), n=1..1000); # Wesley Ivan Hurt, Nov 26 2014
MATHEMATICA
m = 1000; For[n = 1, n < m, If[PrimeQ[10^n - 51], Print[n]]; n++ ]
PROG
(PARI) is(n)=ispseudoprime(10^n-51) \\ Charles R Greathouse IV, Jun 06 2017
CROSSREFS
KEYWORD
more,nonn
AUTHOR
Robert Price, Dec 21 2010
EXTENSIONS
a(10) = 50929 found by Robert Price and added by Patrick De Geest, Nov 26 2014
STATUS
approved