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A085859
Number of 5's in decimal expansion of Fibonacci(n).
10
0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 2, 0, 0, 0, 0, 0, 0, 1, 1, 0, 1, 0, 0, 1, 0, 2, 0, 0, 0, 1, 0, 0, 0, 2, 1, 1, 1, 1, 0, 1, 2, 2, 0, 0, 0, 0, 0, 1, 1, 0, 2, 1, 1, 1, 1, 2, 2, 2, 1, 1, 3, 1, 2, 2, 1, 2, 1, 3, 0, 0, 1, 1, 1, 3, 2, 2, 1, 3, 0, 0, 1, 0, 2, 3, 1, 4, 0, 1, 0, 0, 0, 2, 1, 1, 0, 1, 3, 0, 2, 4, 3, 1, 0, 3, 2
OFFSET
0,11
LINKS
EXAMPLE
From David A. Corneth, Sep 09 2025: (Start)
a(1) = 0 as Fibonacci(1) = 0 which has 0 digits 5.
a(5) = 1 as Fibonacci(5) = 5 which has 1 digit 5.
a(10) = 2 as Fibonacci(10) = 55 which has 2 digits 5. (End)
CROSSREFS
Cf. A000045, 0's A085854, 1's A085855, 2's A085856, 3's A085857, 4's A085858, 6's A085860, 7's A085861, 8's A085862, 9's A085863.
Sequence in context: A263717 A230279 A376366 * A218218 A332006 A086016
KEYWORD
nonn,easy,base
AUTHOR
Jason Earls, Jul 06 2003
STATUS
approved