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

A162585

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

Terms

    a(0) =1a(1) =2a(2) =8a(3) =20a(4) =114a(5) =288a(6) =1156a(7) =3256a(8) =23464a(9) =59716a(10) =243212a(11) =699216a(12) =3659988a(13) =10265800a(14) =42353168a(15) =128163440a(16) =1127515970a(17) =2858004752a(18) =11768578868a(19) =34294832344a(20) =180335471424a(21) =513911386232

External references