id:A093196 - OEIS Search Results

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Number of 4 X 4 pandiagonal magic squares with line sum 2n.

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1, 28, 265, 1392, 5145, 15100, 37681, 83392, 168273, 315580, 557689, 938224, 1514409, 2359644, 3566305, 5248768, 7546657, 10628316, 14694505, 19982320, 26769337, 35377980, 46180113, 59601856, 76128625, 96310396, 120767193 (list; graph; listen)

	OFFSET	`0,2`
	LINKS	`Matthias Beck, The number of "magic" squares and hypercubes`
	FORMULA	`G.f.: [(1+20x+70x^2+20x^3+x^4]/[(1-x)^7].`
	CROSSREFS	`Sequence in context: A092341 A042522 A025517 this_sequence A065693 A125391 A126549` `Adjacent sequences: A093193 A093194 A093195 this_sequence A093197 A093198 A093199`
	KEYWORD	`nonn`
	AUTHOR	`Ralf Stephan, Apr 22 2004`

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

AT&T Labs Research