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A138468 Number of even digits in Fibonacci numbers. 1

%I #13 May 26 2017 02:56:59

%S 1,0,0,1,0,0,1,0,1,1,0,1,2,1,0,2,1,0,3,2,2,3,0,3,4,2,1,3,1,3,5,4,3,3,

%T 4,4,3,3,4,5,3,4,5,4,4,3,3,3,6,5,7,6,5,2,6,6,4,6,5,8,7,6,5,6,7,5,7,7,

%U 9,8,5,7,9,5,8,7,10,6,8,11,11,8,5,5,12,7,10,9,8,7,12,11,11,11,11,9,12

%N Number of even digits in Fibonacci numbers.

%C Zero is counted as an even digit.

%H Robert Israel, <a href="/A138468/b138468.txt">Table of n, a(n) for n = 0..10000</a>

%H Ron Knott, <a href="http://www.maths.surrey.ac.uk/hosted-sites/R.Knott/Fibonacci/fibtable.html">The Fibonacci Numbers</a>.

%F a(n) = A060384(n) - A136610(n). - _Robert Israel_, May 25 2017

%e The Fibonacci number 2584 has three even digits in it, so a(18) = 3.

%Y Cf. A000045, A060384, A136610.

%K nonn,base,less

%O 0,13

%A _Parthasarathy Nambi_, May 18 2008

%E a(0) corrected, and more terms from _Robert Israel_, May 25 2017

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