Digits of composite n end in n', where n' is the arithmetic derivative of n.

A263024

Digits of composite n end in n', where n' is the arithmetic derivative of n.

Terms

    a(0) =19131a(1) =1909131a(2) =14222539a(3) =17654359a(4) =51783947a(5) =59724191a(6) =628025227a(7) =745058551a(8) =938403959a(9) =1637154151a(10) =1834714151a(11) =2369329447a(12) =3871912651a(13) =19090909131a(14) =24934617431a(15) =26450868967a(16) =28346927071a(17) =29730856667a(18) =47968127851a(19) =48264490991a(20) =51096197231a(21) =55762015591a(22) =83490323671

External references