A073560 Number of Fibonacci numbers F(k), k <= 10^n, whose initial digit is 4.

0, 9, 96, 968, 9690, 96908, 969101, 9690998

Offset

1,2

Links

Table of n, a(n) for n=1..8.

Formula

Lim as n -> inf. a(n)/10^n=log(5/4), where the base is 10. - Robert Gerbicz, Sep 05 2002

Example

a(2)=9 because there are 9 Fibonacci numbers up to 10^2 whose initial digit is 4.

Crossrefs

Sequence in context: A264219 A005545 A228007 * A069055 A228011 A024116

Adjacent sequences: A073557 A073558 A073559 * A073561 A073562 A073563

Keyword

base,nonn

Author

Shyam Sunder Gupta, Aug 15 2002

Extensions

More terms from Robert Gerbicz, Sep 05 2002

Status

approved