OFFSET
1,1
LINKS
Nathaniel Johnston, Table of n, a(n) for n = 1..10000
FORMULA
a(n) = (A145480(n-2)-1)/12 for n >= 3.
MAPLE
with(numtheory): a:=proc(n) if(isprime(6*n+19) and isprime(abs(12*n+1)))then return n: fi: return NULL: end: seq(a(n), n=-2..350); # Nathaniel Johnston, Jul 26 2011
CROSSREFS
KEYWORD
sign,easy
AUTHOR
Artur Jasinski, Oct 11 2008
EXTENSIONS
Corrected by Arkadiusz Wesolowski, Jul 26 2011
STATUS
approved