A086479 Number of invertible circulant (0,1) matrices over the reals that have even determinant.

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

Offset

1,3

Links

Table of n, a(n) for n=1..32.

Formula

a(n) = A086323(n) - A003473(n)

Crossrefs

Cf. A003473, A086323, A086324.

Sequence in context: A366410 A054882 A303232 * A091000 A361804 A351155

Adjacent sequences: A086476 A086477 A086478 * A086480 A086481 A086482

Keyword

nonn

Author

Yuval Dekel (dekelyuval(AT)hotmail.com), Sep 09 2003

Extensions

More terms from Max Alekseyev, Sep 25 2009

Status

approved