OFFSET
1,1
COMMENTS
Is also the sum of last digit of three consecutive primes resulting in a prime.
LINKS
Harvey P. Dale, Table of n, a(n) for n = 1..1000
EXAMPLE
a(5)=17 since 17 (mod10)+ 19 (mod 10)+ 23 (mod 10)= 7+9+3=19 is a prime.
MATHEMATICA
Transpose[Select[Partition[Prime[Range[100]], 3, 1], PrimeQ[ Total[ Mod[ #, 10]]]&]] [[1]] (* Harvey P. Dale, Oct 20 2014 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
Carmine Suriano, Sep 27 2010
STATUS
approved