a(n) = either 4a(n-1)+1 or 4a(n-1)+3 depending on corresponding term of A005614, +3 for 0, +1 for 1.

A066744

a(n) = either 4a(n-1)+1 or 4a(n-1)+3 depending on corresponding term of A005614, +3 for 0, +1 for 1.

Terms

    a(0) =1a(1) =7a(2) =29a(3) =117a(4) =471a(5) =1885a(6) =7543a(7) =30173a(8) =120693a(9) =482775a(10) =1931101a(11) =7724405a(12) =30897623a(13) =123590493a(14) =494361975a(15) =1977447901a(16) =7909791605a(17) =31639166423a(18) =126556665693a(19) =506226662775

External references