id:A068718 - OEIS Search Results

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Boustrophedon transform of A068717 with A068717(1) = -1 instead of 0.

+0
2

1, 2, 2, 2, 8, 25, 90, 404, 2055, 11792, 75053, 525622, 4015361, 33231679, 296182315, 2828335731, 28809181418, 311788442591, 3572832236720, 43216177809190, 550245463265240, 7356239983352887, 103028812072639378 (list; graph; listen)

	OFFSET	`0,2`
	COMMENT	`Signs omitted, all terms < 0. A068717(1) = -1 means soluble (11 -100 = +1 resp. 00 -111 = -1).`
	CROSSREFS	`Cf. A068716, A068717, A049240, A046951.` `Sequence in context: A116585 A008293 A011140 this_sequence A075097 A138056 A022459` `Adjacent sequences: A068715 A068716 A068717 this_sequence A068719 A068720 A068721`
	KEYWORD	`nonn,easy`
	AUTHOR	`Frank.Ellermann(AT)t-online.de, Feb 26 2002`

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Last modified December 16 17:18 EST 2009. Contains 170825 sequences.

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