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A005909 a(n) = [ tau*a(n-1) ] + [ tau*a(n-2) ]. 0

%I #8 Dec 26 2021 21:22:22

%S 0,2,3,7,15,35,80,185,428,991,2295,5316,12314,28525,66078,153070,

%T 354588,821407,1902799,4407857,10210855,23653572,54793793,126930502,

%U 294036085,681138245,1577865210,3655144370

%N a(n) = [ tau*a(n-1) ] + [ tau*a(n-2) ].

%C Tau = the Golden Ratio = (sqrt(5)-1)/2. - _Harvey P. Dale_, Jan 11 2013

%t RecurrenceTable[{a[0]==0,a[1]==2,a[n]==Floor[GoldenRatio*a[n-1]]+ Floor[ GoldenRatio*a[n-2]]},a[n],{n,30}] (* _Harvey P. Dale_, Jan 11 2013 *)

%K nonn

%O 0,2

%A _N. J. A. Sloane_

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Last modified April 25 04:42 EDT 2024. Contains 371964 sequences. (Running on oeis4.)