G.f.: A(x) = exp( Sum_{n>=1} 2^n*A006519(n) * x^n/n ), where A006519(n) = highest power of 2 dividing n.
A162589
G.f.: A(x) = exp( Sum_{n>=1} 2^n*A006519(n) * x^n/n ), where A006519(n) = highest power of 2 dividing n.
Terms
- a(0) =1a(1) =2a(2) =6a(3) =12a(4) =38a(5) =76a(6) =188a(7) =376a(8) =1094a(9) =2188a(10) =5236a(11) =10472a(12) =26076a(13) =52152a(14) =118840a(15) =237680a(16) =612678a(17) =1225356a(18) =2804420a(19) =5608840a(20) =13279604a(21) =26559208a(22) =59074504a(23) =118149008a(24) =277925148a(25) =555850296a(26) =1228260104a(27) =2456520208a(28) =5552652792a(29) =11105305584
External references
- oeis: A162589