OFFSET
1,2
COMMENTS
The sequence is strictly nondecreasing. Next term, if it exists, is greater than 1,800,000.
EXAMPLE
fibonacci(227) = 123227981463641240980692501505442003148737643593 is the least Fibonacci number beginning with the concatenation 123, so a(3) = 227.
MATHEMATICA
k = 1; Do[l = IntegerDigits[Fibonacci[n]]; While[Take[l, Min[Length[l], k]] == Range[1, k], Print[n]; k++ ], {n, 1, 1800000}]
CROSSREFS
KEYWORD
base,hard,nonn
AUTHOR
Ryan Propper, Sep 10 2005
STATUS
approved