id:A130169 - OEIS Search Results

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a(1) = 1; for n>1, a(b) = (c(n)+c(n+1))/2, where c(n) = A130168(n).

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1, 2, 9, 63, 621, 8127, 135729, 2810403, 70558101, 2109957687, 74061977049, 3014272078443, 140764140297981, 7474792551154047, 447790997859123969, 30053688313164013683, 2245843775591721612261, 185829940905166760571207, 16941047558158020804504489 (list; graph; listen)

	OFFSET	`1,2`
	REFERENCES	`Hippolyte Dellac, Note sur l'\'elimination, m\'ethode de parall\'elogramme, Annales de la Facult\'e des Sciences de Marseille, XI (1901), 141-164.`
	CROSSREFS	`Cf. A000366, A130168.` `Sequence in context: A100262 A003577 A085928 this_sequence A076944 A074181 A052513` `Adjacent sequences: A130166 A130167 A130168 this_sequence A130170 A130171 A130172`
	KEYWORD	`nonn`
	AUTHOR	`D. E. Knuth, Aug 02 2007`

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Last modified December 6 13:45 EST 2009. Contains 170429 sequences.

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