A002566 - OEIS

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A002566

Queens problem.
(Formerly M4130 N1713)

0, 6, 20, 12, 70, 900, 22, 352 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,2`
	REFERENCES	`M. A. Sainte-Lagu\"{e}, Les R\'{e}seaux (ou Graphes)}, M\'{e}morial des Sciences Math\'{e}matiques, Fasc. 18, Gauthier-Villars, Paris, 1926, p. 49.` `N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence).` `N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).`
	CROSSREFS	`Sequence in context: A176559 A075251 A090590 * A087998 A096823 A007253` `Adjacent sequences: A002563 A002564 A002565 * A002567 A002568 A002569`
	KEYWORD	`nonn,hard`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com).`
	EXTENSIONS	`corrected`

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Last modified February 13 21:59 EST 2012. Contains 205562 sequences.