OFFSET
1,1
LINKS
S. E. Thornton, Properties of the Bohemian family of n x n matrices with population {-1, 0, 1}, Characteristic Polynomial Database.
Minfeng Wang, C++ program to calculate A306839
CROSSREFS
KEYWORD
nonn,more,hard
AUTHOR
Steven E. Thornton, Mar 12 2019
EXTENSIONS
a(1)-a(5) confirmed and a(6) added by Minfeng Wang, May 01 2024
STATUS
approved