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A028894
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a(n) = either 4a(n-1)+1 or 4a(n-1)+3 depending on corresponding term of A005614, +1 for 0, +3 for 1.
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2
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1, 5, 23, 95, 381, 1527, 6109, 24439, 97759, 391037, 1564151, 6256607, 25026429, 100105719, 400422877, 1601691511, 6406766047, 25627064189, 102508256759, 410033027037, 1640132108151, 6560528432607, 26242113730429
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OFFSET
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1,2
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LINKS
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Table of n, a(n) for n=1..23.
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MATHEMATICA
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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]+1+2f[9][[n]]; a/@Range[1, 30]
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CROSSREFS
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Related to A005614, A002450, A037576, A066744.
Sequence in context: A121329 A178834 A146013 * A140529 A055489 A109765
Adjacent sequences: A028891 A028892 A028893 * A028895 A028896 A028897
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KEYWORD
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nonn
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AUTHOR
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John McNamara, Jan 12 2002
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EXTENSIONS
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Edited by Dean Hickerson (dean.hickerson(AT)yahoo.com), Jan 14, 2002
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STATUS
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approved
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