A086829 - OEIS

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A086829

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

1, 3, 45360, 2615348736000, 1938901255416373248000000, 46499165848737652183499931018854400000000, 76035233004283445109031520415161922110944103922401280000000000 (list; graph; refs; listen; history; internal format)

	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 * A190722 A171365 A115976` `Adjacent sequences: A086826 A086827 A086828 * 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 February 14 10:09 EST 2012. Contains 205614 sequences.