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A306840 Number of singular n X n matrices with elements {0, 1, 2}. 0

%I

%S 1,31,6891,12202161,175419087483

%N Number of singular n X n matrices with elements {0, 1, 2}.

%H S. E. Thornton, <a href="http://www.bohemianmatrices.com/cpdb/unstructured/unstructured_0_1_2">Properties of the Bohemian family of n x n matrices with population {0, 1, 2}</a>, Characteristic Polynomial Database.

%Y Number of non-singular matrices is in A197487.

%K nonn,more,hard

%O 1,2

%A _Steven E. Thornton_, Mar 12 2019

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Last modified August 5 22:11 EDT 2020. Contains 336214 sequences. (Running on oeis4.)