A055158 n has distinct digits in descending order and n=a+b where a has the digits of n in another order and b has the digits of n in ascending order (perhaps with leading zeros).

954, 7641, 98754210, 987654321, 9876543210

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)= A055157(n)+A055159(n)

Example

954=495+459

Crossrefs

Cf. A055161.

Sequence in context: A121969 A203024 A055161 * A187635 A345524 A345778

Adjacent sequences: A055155 A055156 A055157 * A055159 A055160 A055161

Keyword

fini,full,base,nonn

Author

Henry Bottomley, Apr 27 2000

Status

approved