A133143 - OEIS

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A133143

Maximal number of mutually nonattacking Super Queens on an n X n board. (a Super Queen is a queen with both queen and knight powers).

1, 1, 1, 2, 4, 4, 5, 6, 8, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,4`
	COMMENTS	`Contribution from Vaclav Kotesovec, Mar 14 2011: (Start)` `For n>=10, a(n)=n, see A051223.` `For same problem on a toroidal chessboard the results for n>10 are the same as for queens (A085801). (End)`
	LINKS	`Bill Butler, More Information` `Rachit Agrawal, Java code for this sequence`
	EXAMPLE	`a(4) = 2:` `\|X\|0\|0\|0\|` `\|0\|0\|0\|X\|` `\|0\|0\|0\|0\|` `\|0\|0\|0\|0\|` `where X denotes the place of a Super Queen.`
	PROG	`See java code text file in the links section.`
	CROSSREFS	`Sequence in context: A100921 A140201 A057861 * A085898 A058568 A058679` `Adjacent sequences: A133140 A133141 A133142 * A133144 A133145 A133146`
	KEYWORD	`nonn`
	AUTHOR	`Rachit Agrawal (rachit_agrawal(AT)daiict.ac.in), Dec 16 2007`

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Last modified February 14 23:16 EST 2012. Contains 205687 sequences.