id:A086479 - OEIS Search Results

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Number of invertible circulant (0,1) matrices over the reals that have even determinant.

+0
2

0, 0, 3, 0, 15, 12, 77, 32, 261, 260, 1023, 1056, 4095, 6552, 19905, 15872, 66045, 97740, 262143, 321320, 1404375, 1391720, 4198397, 6108912, 17619525, 23153832, 79255071, 116921224, 268435455, 529405320, 1259979965, 1408246784 (list; graph; listen)

	OFFSET	`1,3`
	FORMULA	`a(n) = A086323(n) - A003473(n)`
	CROSSREFS	`Cf. A003473, A086323, A086324.` `Sequence in context: A123023 A130637 A054882 this_sequence A091000 A013490 A013351` `Adjacent sequences: A086476 A086477 A086478 this_sequence A086480 A086481 A086482`
	KEYWORD	`nonn`
	AUTHOR	`Yuval Dekel (dekelyuval(AT)hotmail.com), Sep 09 2003`
	EXTENSIONS	`More terms from Max Alekseyev (maxale(AT)gmail.com), Sep 25 2009`

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Last modified December 15 00:47 EST 2009. Contains 170825 sequences.

AT&T Labs Research