A202011 - OEIS

The OEIS mourns the passing of Jim Simons and is grateful to the Simons Foundation for its support of research in many branches of science, including the OEIS.

The OEIS is supported by the many generous donors to the OEIS Foundation.

A202011

Number of -n..n circular arrays x(0..8) of 9 elements with zero sums of x(i) and x(i)*x((i+1) mod 9)

577, 15751, 101395, 490879, 1519417, 4460689, 9882793, 21851983, 40831435, 77490037, 129389941, 219474487, 336880639, 536126239, 777338533, 1152674479, 1605065239, 2301180355, 3090983005, 4236736987, 5528432323, 7416995779 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`1,1`
	COMMENTS	`Row 7 of A202006`
	LINKS	`R. H. Hardin, Table of n, a(n) for n = 1..24`
	EXAMPLE	`Some solutions for n=1` `..1....1....0....0....0....0...-1....0...-1...-1....0....0....1....1....1....0` `..0....0...-1...-1....0....1...-1...-1...-1....1....1....1....0....0....1....1` `.-1....1....0....0...-1....0....0....1....1....0....1....0...-1....0...-1....0` `..0...-1...-1....1....1....0....1....1....1....0...-1....0....1...-1....0....0` `.-1....0....0....1...-1....0...-1....0....0...-1...-1....0...-1....1....0...-1` `..0....0....1...-1...-1....0....1....0....0...-1....0....0...-1....1...-1....0` `..1...-1....0....0....0....1....1....0....1....1...-1....0....0...-1...-1....0` `..0...-1....0....0....1...-1....0....0...-1....1....1...-1....0...-1....1....0` `..0....1....1....0....1...-1....0...-1....0....0....0....0....1....0....0....0`
	CROSSREFS	`Sequence in context: A154514 A278740 A101249 * A157264 A201046 A154511` `Adjacent sequences: A202008 A202009 A202010 * A202012 A202013 A202014`
	KEYWORD	`nonn`
	AUTHOR	`R. H. Hardin Dec 07 2011`
	STATUS	`approved`

License Agreements, Terms of Use, Privacy Policy. .

Last modified June 6 16:10 EDT 2024. Contains 373133 sequences. (Running on oeis4.)