%I #21 Oct 10 2019 07:39:03
%S 1,3,2,5,7,6,4,9,11,10,13,15,14,12,8,17,19,18,21,23,22,20,25,27,26,29,
%T 31,30,28,24,16,33,35,34,37,39,38,36,41,43,42,45,47,46,44,40,49,51
%N Duplicate of A108918.
%K dead
%O 1,2
