id:A100219 - OEIS Search Results

Search: id:A100219

Displaying 1-1 of 1 results found.

page 1

Expansion of (1-2x)/((1-x)(1-x+x^2)).

+0
3

1, 0, -2, -3, -2, 0, 1, 0, -2, -3, -2, 0, 1, 0, -2, -3, -2, 0, 1, 0, -2, -3, -2, 0, 1, 0, -2, -3, -2, 0, 1, 0, -2, -3, -2, 0, 1, 0, -2, -3, -2, 0, 1, 0, -2, -3, -2, 0, 1, 0, -2, -3, -2, 0, 1, 0, -2, -3, -2, 0, 1, 0, -2, -3, -2, 0, 1, 0, -2, -3, -2, 0 (list; graph; listen)

	OFFSET	`0,3`
	COMMENT	`Row sums of number triangle A100218.`
	FORMULA	`a(n)=2a(n-1)-2a(n-2)+a(n-3); a(n)=cos(pin/3+pi/3)+sqrt(3)sin(pi*n/3+pi/3)-1.`
	CROSSREFS	`Cf. A079757.` `Sequence in context: A027413 A019509 A071484 this_sequence A079757 A071493 A050075` `Adjacent sequences: A100216 A100217 A100218 this_sequence A100220 A100221 A100222`
	KEYWORD	`easy,sign`
	AUTHOR	`Paul Barry (pbarry(AT)wit.ie), Nov 08 2004`

page 1

Search completed in 0.002 seconds

Last modified September 8 08:06 EDT 2008. Contains 143486 sequences.

AT&T Labs Research