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%I #9 Aug 16 2019 22:29:01
%S 495,6174,97508421,864197532,9753086421
%N n has distinct digits and n=a-b where a has the digits of n in descending order and b has the digits of n in ascending order (perhaps with leading zeros).
%H Dennis Borris, <a href="https://web.archive.org/web/20060917004138/http://www.ecst.csuchico.edu/~kend/potw/archive/000420sol.html">Identity by Ordered Subtraction</a>, Ken Duisenberg's Puzzle of the Week, April 20, 2000.
%F a(n) = A055158(n) - A055159(n).
%e 495 = 954-459.
%Y Cf. A055158, A055159, A055160.
%K nonn,base,fini,full
%O 0,1
%A _Henry Bottomley_, Apr 27 2000
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