id:A086829 - OEIS Search Results

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Number of n X n matrices on n^2 distinct symbols modulo rotations and reflections.

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1, 3, 45360, 2615348736000, 1938901255416373248000000, 46499165848737652183499931018854400000000, 76035233004283445109031520415161922110944103922401280000000000 (list; graph; listen)

	OFFSET	`1,2`
	LINKS	`Eric Weisstein's World of Mathematics, Square Matrix`
	FORMULA	`a(n) = (n^2)!/8, n>1. - Vladeta Jovovic (vladeta(AT)eunet.rs), Aug 10 2003`
	CROSSREFS	`Cf. A087074.` `Sequence in context: A140656 A135760 A003541 this_sequence A115976 A151594 A119119` `Adjacent sequences: A086826 A086827 A086828 this_sequence A086830 A086831 A086832`
	KEYWORD	`nonn,easy`
	AUTHOR	`Eric Weisstein (eric(AT)weisstein.com), Aug 08, 2003`
	EXTENSIONS	`More terms from Sam Alexander (amnalexander(AT)yahoo.com), Feb 27 2004`

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Last modified November 24 23:16 EST 2009. Contains 167481 sequences.

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