%I
%S 1,4,9,10,21,22,39,40,63,64,99,100,153,154,237,238,363,364,549,550,
%T 831,832,1251,1252,1881,1882,2829,2830,4251,4252,6381,6382,9579,9580,
%U 14373,14374,21567,21568,32355,32356,48537,48538,72813,72814,109227,109228
%N a(n) = smallest number greater than a(n1) having a largest proper divisor that is greater than and coprime to a(n1); a(1) = 1.
%C A032742(a(n+1))>A032742(a(n)) and GCD(A032742(a(n+1)), A032742(a(n)))=1;
%C for n>1: a(2*n) = a(2*n1) + 1,
%C a(2*n+1) = 3*(a(2*n)/2 + 2  0^(a(2*n) mod 4)).
%K nonn
%O 1,2
%A _Reinhard Zumkeller_, Sep 28 2004
