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%I #5 Mar 27 2020 20:09:49
%S 4,6,7,8,10,11,12,13,14,16,18,19,20,21,22,24,25,26,28,32,34,35,36,37,
%T 38,40,41,42,44,48,49,50,52,56,64,66,67,68,69,70,72,73,74,76,80,81,82,
%U 84,88,96,97,98,100,104,112,128,130,131,132,133,134,136,137,138,140,144,145,146
%N Positive integers n, excluding 1 and 2^i+1 for all i, having wt <= 3.
%C Arises in analyzing A151755.
%H Robert Israel, <a href="/A151757/b151757.txt">Table of n, a(n) for n = 1..10000</a>
%p N:= 8: # for terms <= 2^(N+1)
%p Res1:= {seq(2^i,i=2..N)}:
%p Res2:= {seq(seq(2^i+2^j,i=1..j-1),j=2..N)}:
%p Res3:= {seq(seq(seq(2^i+2^j+2^k, i=0..j-1),j=1..k-1),k=2..N)}:
%p sort(convert(Res1 union Res2 union Res3,list)); # _Robert Israel_, Mar 27 2020
%Y Cf. A000120, A048645, A151755.
%K nonn
%O 1,1
%A _N. J. A. Sloane_, Jun 21 2009
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