Knopfmacher expansion of 2/3: a(n+1) = a(n-1)(a(n)+1)-1.

A007568

Knopfmacher expansion of 2/3: a(n+1) = a(n-1)(a(n)+1)-1.

Terms

    a(0) =4a(1) =3a(2) =3a(3) =11a(4) =35a(5) =395a(6) =13859a(7) =5474699a(8) =75873867299

External references