A151863 - OEIS

A151863

a(0)=1; a(1)=0; a(2)=2; for n>=3 if n=2^i + j with 0<=j<2^i then a(n)=2*a(j) + a(j + 1) except we add 1 if j=2^i-1.

%I #4 May 19 2020 07:25:31

%S 1,0,2,3,2,2,7,9,2,2,7,8,6,11,23,21,2,2,7,8,6,11,23,20,6,11,22,22,23,

%T 45,67,45,2,2,7,8,6,11,23,20,6,11,22,22,23,45,67,44,6,11,22,22,23,45,

%U 66,46,23,44,66,67,91,157,179,93,2,2,7,8,6,11,23,20,6,11,22,22,23,45,67,44,6

%N a(0)=1; a(1)=0; a(2)=2; for n>=3 if n=2^i + j with 0<=j<2^i then a(n)=2*a(j) + a(j + 1) except we add 1 if j=2^i-1.

%F I would very much like a g.f. for this sequence!

%Y Cf. A151843-A151874.

%K nonn

%O 0,3

%A _N. J. A. Sloane_, Jul 17 2009