Let f map k to the sum of the factorials of the digits of k (A061602); sequence lists numbers such that f(f(f(k)))=k.

A306955

Let f map k to the sum of the factorials of the digits of k (A061602); sequence lists numbers such that f(f(f(k)))=k.

Terms

    a(0) =1a(1) =2a(2) =145a(3) =169a(4) =1454a(5) =40585a(6) =363601

External references