A055159 n has distinct digits in ascending order and n=a-b where a has the digits of n in descending order and b has the digits of n in another order (a and b perhaps with extra zeros).

459, 1467, 1245789, 123456789, 123456789

Offset

0,1

References

Denis 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)-A055157(n)

Example

459=954-495

Crossrefs

Cf. A055162.

Sequence in context: A224456 A121970 A055162 * A124694 A227754 A253527

Adjacent sequences: A055156 A055157 A055158 * A055160 A055161 A055162

Keyword

fini,full,base,nonn

Author

Henry Bottomley, Apr 27 2000

Status

approved