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A073550 Number of Fibonacci numbers F(k), k <= 10^n, which end in 1. 3

%I #14 Jun 08 2019 17:57:06

%S 3,14,134,1334,13334,133334,1333334,13333334,133333334,1333333334,

%T 13333333334,133333333334,1333333333334,13333333333334,

%U 133333333333334,1333333333333334,13333333333333334,133333333333333334

%N Number of Fibonacci numbers F(k), k <= 10^n, which end in 1.

%F a(n) = ceiling((10^n-1)/60) + ceiling((10^n-2)/60) + ceiling((10^n-8)/60) + ceiling((10^n-19)/60) + ceiling((10^n-22)/60) + ceiling((10^n-28)/60) + ceiling((10^n-41)/60) + ceiling((10^n-59)/60).

%F a(n) = ceiling(40/3*10^(n-1)) for n>1. - _Benoit Cloitre_, Aug 27 2002; [Edited by _Felix Fröhlich_, Jun 08 2019]

%e a(2) = 14 because there are 14 Fibonacci numbers up to 10^2 which end in 1.

%Y Cf. A072675. Different from A072509.

%K base,nonn

%O 1,1

%A _Shyam Sunder Gupta_, Aug 15 2002

%E More terms from _Vladeta Jovovic_, Aug 20 2002

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Last modified May 13 01:02 EDT 2024. Contains 372497 sequences. (Running on oeis4.)