%I #4 Mar 30 2012 18:57:01
%S 1,4,6,9,12,15,17,20,23,25,28,31,34,36,39,42,45,47,50,53,56,58,61,64,
%T 66,69,72,75,77,80,83,86,88,91,94,96,99,102,105,107,110,113,116,118,
%U 121,124,127,129,132,135,137,140,143,146,148,151
%N s(3n-2), s=A054086; also a bisection of A003511.
%K nonn
%O 1,2
%A _Clark Kimberling_