Trajectory of 277777788888899 under "x -> product of digits of x" map.

A121111

Trajectory of 277777788888899 under "x -> product of digits of x" map.

Terms

    a(2) =438939648a(3) =4478976a(4) =338688a(5) =27648a(6) =2688a(7) =768a(8) =336a(9) =54a(10) =20a(11) =0

External references