A055161 n has 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, 995544, 766431, 76664331, 98754210, 987654321, 999555444, 7666643331, 9876543210, 9987542100, 98766543321, 766666433331, 987665433210, 998765432100, 999875421000, 999955554444, 9876665433321

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..17.

Source

Formula

a(n)= A055160(n)+A055162(n)

Example

954=495+459

Crossrefs

Cf. A055158.

Sequence in context: A073500 A121969 A203024 * A055158 A187635 A345524

Adjacent sequences: A055158 A055159 A055160 * A055162 A055163 A055164

Keyword

base,nonn

Author

Henry Bottomley, Apr 27 2000

Status

approved