Alternating three ratio switched sequence based on characteristic root of A000931.

A108169

Alternating three ratio switched sequence based on characteristic root of A000931.

Terms

    a(0) =1a(1) =1a(2) =1a(3) =3a(4) =18a(5) =33a(6) =111a(7) =690a(8) =1269a(9) =4292a(10) =26705a(11) =49118a(12) =166165a(13) =1033922a(14) =1901679a(15) =6433333a(16) =40029886a(17) =73626439a(18) =249076459a(19) =1549819116a(20) =2850561773a(21) =9643381402a(22) =60003650693a(23) =110363919984a(24) =373358466957

External references