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 A066744 a(n) = either 4a(n-1)+1 or 4a(n-1)+3 depending on corresponding term of A005614, +3 for 0, +1 for 1. 1

%I #5 Mar 31 2012 20:38:27

%S 1,7,29,117,471,1885,7543,30173,120693,482775,1931101,7724405,

%T 30897623,123590493,494361975,1977447901,7909791605,31639166423,

%U 126556665693,506226662775,2024906651101,8099626604405,32398506417623

%N a(n) = either 4a(n-1)+1 or 4a(n-1)+3 depending on corresponding term of A005614, +3 for 0, +1 for 1.

%C Ratio to terms of A028894 tends to 1.23459972586...

%t f[1]={0}; f[2]={1}; f[n_] := f[n]=Join[f[n-1], f[n-2]]; a[1]=1; a[n_] := a[n]=4a[n-1]+3-2f[9][[n]]; a/@Range[1, 30]

%Y Related to A005614, A002450, A037576, A028894.

%K nonn

%O 1,2

%A _John McNamara_, Jan 16 2002

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Last modified September 11 16:20 EDT 2024. Contains 375836 sequences. (Running on oeis4.)