OFFSET
1,1
COMMENTS
One more than the associated value in A104275. - R. J. Mathar, Jan 05 2011
The terms after a(1) are the values of 2*h*k + k + h + 2, where h and k are positive integers. - Vincenzo Librandi, Jan 19 2013
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 1..1000
MATHEMATICA
Select[Range[2, 200], !PrimeQ[2*#-3]&] (* Vladimir Joseph Stephan Orlovsky, Feb 09 2012 *)
PROG
(Magma) [n: n in [2..102] | not IsPrime(2*n-3)]; // Bruno Berselli, Mar 05 2011
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Vincenzo Librandi, Dec 17 2008
STATUS
approved