%I #6 Mar 30 2012 18:39:22
%S 4,10,12,13,28,30,31,36,37,39,40,82,84,85,90,91,93,94,108,109,111,112,
%T 117,118,120,121,244,246,247,252,253,255,256,270,271,273,274,279,280,
%U 282,283,324,325,327,328,333,334,336,337,351,352,354,355,360,361,363
%N Numbers n such that A092255(n) == 2 (mod 3).
%F A092255(n) == 2 (mod 3) iff n is not a power of 3 or n is not in A074940
%o (PARI) for(n=1,775,if(binomial(2*n,n)%3*abs(gcd(3^50,n)-n)>0,print1(n,",")))
%K nonn
%O 1,1
%A _Benoit Cloitre_, Mar 22 2004