id:A059525 - OEIS Search Results

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Number of n X n checkerboards in which the set of red squares is edge connected.

+0
1

0, 1, 13, 218, 11506, 2301877, 1732082741, 4872949974666 (list; graph; listen)

	OFFSET	`0,3`
	CROSSREFS	`Cf. A059020, A059021.` `Sequence in context: A132542 A069989 A096141 this_sequence A086147 A015253 A051621` `Adjacent sequences: A059522 A059523 A059524 this_sequence A059526 A059527 A059528`
	KEYWORD	`nonn`
	AUTHOR	`David Radcliffe (radcl008(AT)umn.edu), Jan 21 2001`
	EXTENSIONS	`One more term from John W. Layman (layman(AT)vt.edu), Jan 25 2001` `More terms from Ron Hardin (rhh(AT)cadence.com), Feb 28 2002`

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Last modified August 19 23:53 EDT 2008. Contains 142930 sequences.