a(n) is the smallest number such that, with f(x) = x - (the product of the digits of x), f(a(n)) reaches a fixed point after n iterations.

A336383

a(n) is the smallest number such that, with f(x) = x - (the product of the digits of x), f(a(n)) reaches a fixed point after n iterations.

Terms

    a(0) =0a(1) =1a(2) =21a(3) =31a(4) =42a(5) =52a(6) =73a(7) =81a(8) =319a(9) =391a(10) =463a(11) =583a(12) =2911a(13) =3667a(14) =6451a(15) =8793a(16) =9927a(17) =237126a(18) =254158a(19) =278393a(20) =2561363a(21) =9398143a(22) =9431623a(23) =9951265a(24) =83543869a(25) =83896381a(26) =83935261a(27) =2843233127a(28) =2847297383a(29) =2853748583

External references