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A032943 Numbers whose base-8 representation Sum_{i=0..m} d(i)*8^(m-i) has d(i)=0 for all odd i.

%I A032943 #14 Feb 12 2021 22:04:26
%S A032943 1,2,3,4,5,6,7,8,16,24,32,40,48,56,64,65,66,67,68,69,70,71,128,129,
%T A032943 130,131,132,133,134,135,192,193,194,195,196,197,198,199,256,257,258,
%U A032943 259,260,261,262,263,320,321,322,323,324,325,326
%N A032943 Numbers whose base-8 representation Sum_{i=0..m} d(i)*8^(m-i) has d(i)=0 for all odd i.
%H A032943 Robert Israel, <a href="/A032943/b032943.txt">Table of n, a(n) for n = 1..10000</a>
%p A032943 b:= 8:
%p A032943 f:= proc(n, j) local L, m;
%p A032943   L:= convert(n, base, b);
%p A032943   m:= nops(L);
%p A032943   j*add(L[i+1]*b^(2*i), i=0..m-1)
%p A032943 end proc:
%p A032943 seq(seq(seq(f(n, j), n=b^k..b^(k+1)-1), j=[1, b]), k=0..2); # _Robert Israel_, Nov 16 2020
%Y A032943 Cf. A007094 (numbers in base 8).
%K A032943 nonn,base
%O A032943 1,2
%A A032943 _Clark Kimberling_
%E A032943 Definition corrected by _Robert Israel_, Nov 16 2020