A306840 Number of singular n X n matrices with elements {0, 1, 2}.
1, 31, 6891, 12202161, 175419087483, 20540753180392401
Offset: 1
Links
- S. E. Thornton, Properties of the Bohemian family of n x n matrices with population {0, 1, 2}, Characteristic Polynomial Database.
- Minfeng Wang, C++ program to calculate A306840
Crossrefs
Number of non-singular matrices is in A197487.
Extensions
a(6) from Minfeng Wang, May 29 2024