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A306840
Number of singular n X n matrices with elements {0, 1, 2}.
0
1, 31, 6891, 12202161, 175419087483
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OFFSET
1,2
LINKS
Table of n, a(n) for n=1..5.
S. E. Thornton,
Properties of the Bohemian family of n x n matrices with population {0, 1, 2}
, Characteristic Polynomial Database.
CROSSREFS
Number of non-singular matrices is in
A197487
.
Sequence in context:
A297767
A065756
A263378
*
A212858
A337678
A059384
Adjacent sequences:
A306837
A306838
A306839
*
A306841
A306842
A306843
KEYWORD
nonn
,
more
,
hard
AUTHOR
Steven E. Thornton
, Mar 12 2019
STATUS
approved
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Last modified April 25 08:27 EDT 2024. Contains 371964 sequences. (Running on oeis4.)