Iterates of A122237, starting from 4.

A122241

Iterates of A122237, starting from 4.

Terms

    a(0) =4a(1) =22a(2) =54a(3) =169a(4) =516a(5) =1841a(6) =6076a(7) =19256a(8) =66140a(9) =252691a(10) =888179a(11) =2900616

External references