A143870 - OEIS

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A143870

Number of ways of placing kings with no more than 1 mutual attack on an n X n chessboard.

1, 2, 11, 91, 1462, 38483, 1755113, 140404442, 19400886875, 4764856837927 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,2`
	CROSSREFS	`Sequence in context: A138552 A004677 A094955 * A047854 A122708 A005366` `Adjacent sequences: A143867 A143868 A143869 * A143871 A143872 A143873`
	KEYWORD	`nonn`
	AUTHOR	`R. H. Hardin (rhhardin(AT)att.net), Sep 04 2008`

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Last modified February 14 16:10 EST 2012. Contains 205635 sequences.