id:A131041 - OEIS Search Results

Search: id:A131041

Displaying 1-1 of 1 results found.

page 1

a(n) = 2*a(n-1) - a(n-2) - a(n-4).

+0
3

1, 1, 1, -1, -4, -8, -13, -17, -17, -9, 12, 50, 105, 169, 221, 223, 120, -152, -645, -1361, -2197, -2881, -2920, -1598, 1921, 8321, 17641, 28559, 37556, 38232, 21267, -24257, -107337, -228649, -371228, -489550, -500535, -282871, 306021 (list; graph; listen)

	OFFSET	`0,5`
	COMMENT	`Generating floretion is .5i' + .5j' + .5k' + .5e + 'ii' (for A131039 it is 'i + .5i' + .5j' + .5k' + .5e and for A131040 it is 1.5i' + .5j' + .5k' + .5e)`
	FORMULA	`G.f. (1-x-2x^3)/(1-2x+x^2+x^4)`
	MAPLE	`Floretion Algebra Multiplication Program, FAMP Code: 2tesseq[.5i' + .5j' + .5k' + .5e + 'ii']`
	CROSSREFS	`Cf. A131039, A131040, A131042, A002316, A002531.` `Sequence in context: A058759 A032474 A103024 this_sequence A081843 A004938 A004081` `Adjacent sequences: A131038 A131039 A131040 this_sequence A131042 A131043 A131044`
	KEYWORD	`easy,sign`
	AUTHOR	`Creighton Dement (creighton.k.dement(AT)uni-oldenburg.de), Jun 11 2007`

page 1

Search completed in 0.002 seconds

Last modified December 2 15:58 EST 2008. Contains 150992 sequences.

AT&T Labs Research