id:A028894 - OEIS Search Results

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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.

+0
3

1, 5, 23, 95, 381, 1527, 6109, 24439, 97759, 391037, 1564151, 6256607, 25026429, 100105719, 400422877, 1601691511, 6406766047, 25627064189, 102508256759, 410033027037, 1640132108151, 6560528432607, 26242113730429 (list; graph; listen)

	OFFSET	`1,2`
	MATHEMATICA	`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]`
	CROSSREFS	`Related to A005614, A002450, A037576, A066744.` `Sequence in context: A034447 A121329 A146013 this_sequence A140529 A055489 A109765` `Adjacent sequences: A028891 A028892 A028893 this_sequence A028895 A028896 A028897`
	KEYWORD	`nonn`
	AUTHOR	`John McNamara (mistermac39(AT)yahoo.com), Jan 12 2002`
	EXTENSIONS	`Edited by Dean Hickerson (dean.hickerson(AT)yahoo.com), Jan 14, 2002`

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Last modified November 25 08:46 EST 2009. Contains 167481 sequences.

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