%I #8 Mar 30 2012 16:50:10
%S 0,1,4,15,55,119
%N Numbers n such that binomial(n+1,2) is in A027568.
%Y Cf. A027568.
%K nonn,fini,full
%O 1,3
%A _N. J. A. Sloane_, Sep 06 2008
