id:A060239 - OEIS Search Results

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det(P*Q)/n! where P, Q are n X n matrices with P[i,j]=lcm(i,j), Q[i,j]=gcd(i,j).

+0
3

1, -1, 4, -8, 128, 512, -18432, 73728, -884736, -14155776, 1415577600, 11324620800, -1630745395200, -58706834227200, -3757237390540800, 30057899124326400, -7694822175827558400, -92337866109930700800 (list; graph; listen)

	OFFSET	`1,3`
	CROSSREFS	`Cf. A001088, A060238.` `Sequence in context: A105036 A012940 A013049 this_sequence A127943 A012498 A133262` `Adjacent sequences: A060236 A060237 A060238 this_sequence A060240 A060241 A060242`
	KEYWORD	`sign`
	AUTHOR	`MCKAY john (mckay(AT)cs.concordia.ca), Mar 21 2001`

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Last modified December 10 12:37 EST 2009. Contains 170569 sequences.

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