%I #3 Mar 30 2012 17:37:05
%S 2,7,5,13,25,37,41,89,61,85,113,221,253,281,181,361,421,433,761,841,
%T 613,793,1009,1541,1201,1901,1121,1261,2801,2881,2053,3173,2773,2521,
%U 2161,3421,4001,6865,5581,6553,5441,6481,7141,10193
%N Least k such that A033178(k)=n.
%K nonn
%O 1,1
%A _Christian G. Bower_