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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).
3
954, 7641, 98754210, 987654321, 9876543210
OFFSET
0,1
REFERENCES
Denis Borris, Ken Duisenberg's Puzzle of the Week, April 20, 2000
FORMULA
a(n)= A055157(n)+A055159(n)
EXAMPLE
954=495+459
CROSSREFS
Cf. A055161.
Sequence in context: A121969 A203024 A055161 * A187635 A345524 A345778
KEYWORD
fini,full,base,nonn
AUTHOR
Henry Bottomley, Apr 27 2000
STATUS
approved