A171012 - OEIS

A171012

Number of ways to place two non-attacking wazirs on all free n-ominoes.

0, 0, 2, 14, 71, 341, 1591, 7610, 35432, 165209 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`1,3`
	LINKS	`Table of n, a(n) for n=1..10.`
	EXAMPLE	`E.g. the triomino XXX admits 1 combination of 2 non-attacking wazirs.` `The triomino XX admits 1 combination of 2 non-attacking wazirs.` `............ X`
	CROSSREFS	`Sequence in context: A206947 A203241 A072888 * A094583 A002058 A095933` `Adjacent sequences: A171009 A171010 A171011 * A171013 A171014 A171015`
	KEYWORD	`nonn`
	AUTHOR	`David Scambler, Aug 27 2010`
	STATUS	`approved`

Last modified June 28 05:40 EDT 2022. Contains 354903 sequences. (Running on oeis4.)