id:A077629 - OEIS Search Results

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Sum of terms in periodic part of continued fraction expansion of square root of -1+2^n.

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1, 3, 7, 7, 25, 15, 63, 31, 125, 63, 187, 127, 1081, 255, 1091, 511, 1247, 1023, 11217, 2047, 11999, 4095, 20259, 8191, 66077 (list; graph; listen)

	OFFSET	`1,2`
	MATHEMATICA	`Table[Apply[Plus, Last[ContinuedFraction[Sqrt[ -1+2^u]]]], {u, 1, 25}]`
	CROSSREFS	`Cf. A077624-A077635.` `Sequence in context: A085420 A113833 A121172 this_sequence A004794 A086839 A064208` `Adjacent sequences: A077626 A077627 A077628 this_sequence A077630 A077631 A077632`
	KEYWORD	`nonn`
	AUTHOR	`Labos E. (labos(AT)ana.sote.hu), Nov 13 2002`

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Last modified September 5 23:51 EDT 2008. Contains 143485 sequences.