1,1

In A077436 but not in A023758.

Table of n, a(n) for n=1..51.

G. Melfi, On simultaneous binary expansions of n and n^2.

Sequence in context: A015984 A235227 A039544 * A117244 A039436 A043259

Adjacent sequences: A091816 A091817 A091818 * A091820 A091821 A091822

nonn

Ralf Stephan, Mar 08 2004

approved