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A164018
The index values of the smallest and the largest n-digit Fibonacci numbers.
1
0, 6, 7, 11, 12, 16, 17, 20, 21, 25, 26, 30, 31, 35, 36, 39, 40, 44, 45, 49, 50, 54, 55, 59, 60, 63, 64, 68, 69, 73, 74, 78, 79, 83, 84, 87, 88, 92, 93, 97, 98, 102, 103, 106, 107, 111, 112, 116, 117, 121, 122, 126, 127, 130, 131, 135, 136, 140, 141, 145
OFFSET
0,2
COMMENTS
= A072354 + A072353 [From Parthasarathy Nambi, Sep 14 2009]
LINKS
EXAMPLE
The index value of the smallest ten digit Fibonacci number is 45. The index value of the largest ten digit Fibonacci number is 49.
MATHEMATICA
Drop[Flatten[{#-1, #}&/@Flatten[Table[Position[IntegerLength[Fibonacci[ Range[250]]], n, 1, 1], {n, 50}]]], {2}](* Harvey P. Dale, Jun 04 2018 *)
CROSSREFS
Sequence in context: A117618 A015825 A243489 * A156793 A081715 A054504
KEYWORD
base,nonn
AUTHOR
Parthasarathy Nambi, Aug 07 2009
EXTENSIONS
More terms from Harvey P. Dale, Jun 04 2018
STATUS
approved