id:A131040 - OEIS Search Results

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a(n) = (1/2+1/2*I*sqrt(11))^n + (1/2-1/2*I*sqrt(11))^n.

+0
3

1, -5, -8, 7, 31, 10, -83, -113, 136, 475, 67, -1358, -1559, 2515, 7192, -353, -21929, -20870, 44917, 107527, -27224, -349805, -268133, 781282, 1585681, -758165, -5515208, -3240713, 13304911, 23027050, -16887683, -85968833, -35305784 (list; graph; listen)

	OFFSET	`0,2`
	COMMENT	`Generating floretion is 1.5i' + .5j' + .5k' + .5e whereas in A131039 it is 'i + .5i' + .5j' + .5k' + .5e`
	FORMULA	`a(n) = a(n-1) - 3a(n-2); G.f. (1-6x)/(3*x^2+1-x)`
	MAPLE	`Floretion Algebra Multiplication Program, FAMP Code: 2tesseq[ 1.5i' + .5j' + .5k' + .5e]`
	CROSSREFS	`Cf. A131039, A131041, A131042, A002316, A002531.` `Sequence in context: A019845 A053787 A039678 this_sequence A007450 A068470 A069997` `Adjacent sequences: A131037 A131038 A131039 this_sequence A131041 A131042 A131043`
	KEYWORD	`easy,sign`
	AUTHOR	`Creighton Dement (creighton.k.dement(AT)uni-oldenburg.de), Jun 11 2007`

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Last modified December 3 01:16 EST 2008. Contains 151161 sequences.

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