%N "Autotomy numbers" have two properties: (1) they have distinct decimal digits, and (2) subtracting their last digit from the remaining part produces another autotomy number (the numbers 1 to 9 are considered to be part of the sequence).
%C There are exactly 41943 autotomy numbers. For autotomy numbers with 10 distinct decimal digits, see the Crossref section.
%H Jean-Marc Falcoz, <a href="/A308393/b308393.txt">Table of n, a(n) for n = 1..41943</a>
%H Eric Angelini, <a href="https://cinquantesignes.blogspot.com/2019/05/pandigitaux-et-saucissons.html">Pandigitaux et saucissons</a> (in French).
%e a(56) = 243 is in the sequence because 24-3 = 21 and 21 is already in the sequence. The same is true for a(57) = 254 as 25-4 = 21 too.
%Y Cf. A308377 (autotomy numbers with 10 distinct decimal digits).
%A _Eric Angelini_ and _Jean-Marc Falcoz_, May 24 2019