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 A055160 Numbers n with the property that 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), ordered by a. 5
 495, 6174, 549945, 631764, 63317664, 97508421, 864197532, 554999445, 6333176664, 9753086421, 9975084201, 86431976532, 633331766664, 975330866421, 997530864201, 999750842001, 555499994445, 8643319766532 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS This sequence appears to differ from A099009 at the positions of two terms in it: 554999445 and 555499994445. - Alexander R. Povolotsky, May 01 2012 REFERENCES Denis Borris, Ken Duisenberg's Puzzle of the Week, April 20, 2000 LINKS Denis Borris, Ken Duisenberg's Puzzle of the Week, April 20, 2000 Yutaka Nishiyama, The weirdness of number 6174, International Journal of Pure and Applied Mathematicsm, Volume 80 No. 3 2012, 363-373. - From N. J. A. Sloane, Oct 29 2014 FORMULA a(n) = A055161(n) - A055162(n). EXAMPLE 495 = 954-459. CROSSREFS Cf. A055157, A099009. Sequence in context: A151965 A151957 A099009 * A055157 A027808 A104478 Adjacent sequences: A055157 A055158 A055159 * A055161 A055162 A055163 KEYWORD base,nonn AUTHOR Henry Bottomley, Apr 27 2000 STATUS approved

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Last modified December 5 19:57 EST 2022. Contains 358588 sequences. (Running on oeis4.)