A071310 a(n) = (1/4) * (number of n X n 0..11 matrices with MM' mod 12 = I).

1, 32, 4608, 7077888, 101921587200, 19725496300339200, 49628717475771816345600

Offset: 1

Author

R. H. Hardin, Jun 11 2002

Keywords

• nonn
• more

Crossrefs

Cf. A003053, A071302, A071303, A071304, A071305, A071306, A071307, A071308, A071309, A071900.

Formula

a(n) = A071302(n) * A071303(n). - Max Alekseyev, Nov 06 2022

Extensions

a(6) from Max Alekseyev, Nov 06 2022

a(7) from Sean A. Irvine, Jul 11 2024