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A071310
a(n) = (1/4) * (number of n X n 0..11 matrices with MM' mod 12 = I).
8
1, 32, 4608, 7077888, 101921587200, 19725496300339200, 49628717475771816345600
OFFSET
1,2
FORMULA
a(n) = A071302(n) * A071303(n). - Max Alekseyev, Nov 06 2022
KEYWORD
nonn,more
AUTHOR
R. H. Hardin, Jun 11 2002
EXTENSIONS
a(6) from Max Alekseyev, Nov 06 2022
a(7) from Sean A. Irvine, Jul 11 2024
STATUS
approved