OFFSET
1,1
LINKS
Harvey P. Dale, Table of n, a(n) for n = 1..1000
EXAMPLE
223=2*19+3*23+4*29,
569=2*59+3*61+4*67,
71011=2*7879+3*7883+4*7901,
940483=2*104479+3*104491+4*104513,
11694107=2*1299341+3*1299343+4*1299349,
139372099=2*15485773+3*15485783+4*139372099,
1614810061=2*179423329+3*179423333+4*179423351,
18342658199=2*2038073129+3*2038073131+4*2038073137,
205215855233=2*22801761659+3*22801761677+4*22801761721.
Apparently there are infinitely many such primes.
MATHEMATICA
Select[2#[[1]]+3#[[2]]+4#[[3]]&/@Partition[Prime[Range[250]], 3, 1], PrimeQ] (* Harvey P. Dale, Jul 31 2013 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
Zak Seidov, Mar 26 2008
EXTENSIONS
Corrected by Harvey P. Dale, Jul 31 2013
STATUS
approved