OFFSET
1,1
COMMENTS
Integer values of (2*h*k + k + h - 9)/12, with h >= k >= 1.
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 1..8000
MATHEMATICA
Select[Range[110], !PrimeQ[24 # + 19] &]
PROG
(Magma) [n: n in [1..220]| not IsPrime(24*n+19)];
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Vincenzo Librandi, Apr 13 2014
STATUS
approved