%I #10 Mar 31 2017 21:25:36
%S 1,1,9,15,283,341,433,511,34679,38505,42405,46267,52275,56621,61153,
%T 65535,17284591,18299345,19314253,20329075,21352811,22369621,23386825,
%U 24403703,25959655,27039961,28120901,29201275,30306403,31388765
%N In binary representation of n, replace ones with n and zeros with n's binary complement (keeping leading zeros).
%C B(i*A070939(n))+j) = [b(i)=b(j)] where n=Sum(b(k)*2^k:0<=k < A070939(n)), a(n)=Sum(B(k)*2^k:0<=k < A070939(n)^2), 0<=b(k),B(k)<=1;
%C A070939(a(n)) = A070939(n)^2;
%C a(n) <= 2^(A070939(n)^2) - 1;
%C A023416(a(n)) = 2*A023416(n)*A000120(n);
%C A000120(a(n)) = A023416(n)^2 + A000120(n)^2;
%C a(2^k-1) = 2^(k^2)-1, a(A000225(k)) = A000225(k^2).
%H <a href="/index/Bi#binary">Index entries for sequences related to binary expansion of n</a>
%e n=25 -> 11001 -> (11001)(11001)(00110)(00110)(11001) ->
%e -> 1100111001001100011011001 -> a(25) = 27039961.
%Y Cf. A007088, A035327.
%K nonn
%O 0,3
%A _Reinhard Zumkeller_, Dec 28 2004