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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
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OFFSET
1,2
LINKS
Table of n, a(n) for n=1..6.
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
STATUS
approved
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Last modified April 18 10:01 EDT 2024. Contains 371779 sequences. (Running on oeis4.)