cp's OEIS Frontend

A331588 a(n) is the least k such that A331587(n) = k * reverse(k) (where reverse(k) is the binary reversal of k, A030101(k)).

%I A331588 #10 Jan 22 2020 12:57:13
%S A331588 1,3,5,7,9,11,15,17,21,19,23,27,31,33,37,35,45,39,43,51,47,55,63,65,
%T A331588 73,69,67,77,85,75,71,83,93,79,99,91,87,107,103,95,111,119,127,129,
%U A331588 137,133,153,141,149,131,165,157,139,147,135,173,163,155,143,151,189
%N A331588 a(n) is the least k such that A331587(n) = k * reverse(k) (where reverse(k) is the binary reversal of k, A030101(k)).
%H A331588 Rémy Sigrist, <a href="/A331588/b331588.txt">Table of n, a(n) for n = 1..8347</a>
%H A331588 Rémy Sigrist, <a href="/A331588/a331588.gp.txt">PARI program for A331588</a>
%F A331588 a(n) = A030101(A331589(n)).
%F A331588 a(n) * A331589(n) = A331587(n).
%o A331588 (PARI) See Links section.
%Y A331588 Cf. A030101, A331587, A331589.
%K A331588 nonn,base
%O A331588 1,2
%A A331588 _Rémy Sigrist_, Jan 21 2020