Numbers having digits in nondecreasing order and repeatedly setting n := A066308(n) yields a constant nonzero n.

A256242

Numbers having digits in nondecreasing order and repeatedly setting n := A066308(n) yields a constant nonzero n.

Terms

    a(0) =1a(1) =89a(2) =135a(3) =139a(4) =144a(5) =233a(6) =1224a(7) =1367a(8) =11249a(9) =12222a(10) =111126a(11) =111266a(12) =111338a(13) =112229a(14) =112337a(15) =1111119a(16) =1111134a(17) =1111137a(18) =1111177a(19) =1111333a(20) =1111346a(21) =11111117a(22) =11111119a(23) =11111223a(24) =11112236a(25) =111111119a(26) =111111139a(27) =111111299a(28) =111112334a(29) =1111111169

External references