A164018 The index values of the smallest and the largest n-digit Fibonacci numbers.
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
Examples
The index value of the smallest ten digit Fibonacci number is 45. The index value of the largest ten digit Fibonacci number is 49.
Links
- Harvey P. Dale, Table of n, a(n) for n = 0..999
Crossrefs
Cf. A000045
Programs
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Mathematica
Drop[Flatten[{#-1,#}&/@Flatten[Table[Position[IntegerLength[Fibonacci[ Range[250]]],n,1,1],{n,50}]]],{2}](* Harvey P. Dale, Jun 04 2018 *)
Extensions
More terms from Harvey P. Dale, Jun 04 2018
Comments