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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
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OFFSET
1,2
LINKS
Table of n, a(n) for n=1..7.
FORMULA
a(n) = A071302(n) * A071303(n). - Max Alekseyev, Nov 06 2022
CROSSREFS
Cf. A003053, A071302, A071303, A071304, A071305, A071306, A071307, A071308, A071309, A071900.
Sequence in context: A248075 A248000 A278302 * A265371 A232913 A209542
Adjacent sequences: A071307 A071308 A071309 * A071311 A071312 A071313
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

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Last modified September 30 15:21 EDT 2024. Contains 376364 sequences.
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