%I #3 Mar 30 2012 16:47:22
%S 4,9,13,27,23,41,33,55,83,51,103,89,69,103,143,155,95,175,147,113,205,
%T 171,227,289,201,155,215,165,229,547,255,329,205,489,221,373,385,319,
%U 407,419,263,611,279,373,289,763
%N First differences of A033286.
%K nonn
%O 0,1
%A _N. J. A. Sloane_.