G.f.: A(x) = exp( 2*Sum_{n>=1} 2^n/A006519(n) * x^n/n ), where A006519(n) = highest power of 2 dividing n.

A162588

G.f.: A(x) = exp( 2*Sum_{n>=1} 2^n/A006519(n) * x^n/n ), where A006519(n) = highest power of 2 dividing n.

Terms

    a(0) =1a(1) =4a(2) =10a(3) =24a(4) =52a(5) =112a(6) =240a(7) =512a(8) =1060a(9) =2192a(10) =4552a(11) =9440a(12) =19408a(13) =39872a(14) =81984a(15) =168448a(16) =342632a(17) =696736a(18) =1421200a(19) =2897856a(20) =5891872a(21) =11976064a(22) =24361856a(23) =49543168a(24) =100329952a(25) =203147136a(26) =411939264a(27) =835168512a(28) =1690383744a(29) =3420860928

External references