A086323 Number of n X n circulant invertible (0,1) matrices over the reals.

1, 2, 6, 8, 30, 36, 126, 160, 450, 740, 2046, 2592, 8190, 12824, 30030, 48640, 131070, 194508, 524286, 812840, 1987818, 3486824, 8388606, 12400368, 33348150, 56700072, 128800098, 219681672, 536870910, 861181320, 2147483646, 3555730432

Offset: 1

Author

Yuval Dekel (dekelyuval(AT)hotmail.com), Aug 30 2003

Keywords

• nonn

Links

• Max Alekseyev, Table of n, a(n) for n = 1..39

Crossrefs

Cf. A003473.

Formula

a(n) = 2^n - A086328(n).

Extensions

More terms from Vladeta Jovovic, Sep 08 2003

More terms from Max Alekseyev, Sep 24 2009