0,3

Integers in A071053 repeated .

Table of n, a(n) for n=0..81.

a(2*n)=a(2*n+1) . a(n)=Sum_{k, 0<=k<=n}A128973(n,k) . a(2^k+m)=3*a(m) for 0<=m<=2^(k-1)-1, k>=1 .

a(4n)=a(2n)=A071053(n) .

Sequence in context: A262995 A125713 A162220 * A190268 A111756 A130821

Adjacent sequences: A118908 A118909 A118910 * A118912 A118913 A118914

nonn

Philippe Deléham, May 02 2007, Jan 06 2008

approved