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A055157 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). 3
495, 6174, 97508421, 864197532, 9753086421 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

REFERENCES

Dennis Borris, Ken Duisenberg's Puzzle of the Week, April 20, 2000

LINKS

Table of n, a(n) for n=0..4.

Source

FORMULA

a(n)=A055158(n)-A055159(n)

EXAMPLE

495=954-459

CROSSREFS

Cf. A055160.

Sequence in context: A151957 A099009 A055160 * A027808 A104478 A133352

Adjacent sequences:  A055154 A055155 A055156 * A055158 A055159 A055160

KEYWORD

nonn,base

AUTHOR

Henry Bottomley, Apr 27 2000

STATUS

approved

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Last modified May 27 02:54 EDT 2019. Contains 323597 sequences. (Running on oeis4.)