398126

Appears in sequences

• a(n) = (n^4 + 2n^3 + 5n^2 + 4)/4.at n=35A123350
• Half the number of nX3 binary arrays with the number of 1-1 horizontal, vertical, diagonal and antidiagonal adjacencies equal to the number of 0-0 adjacencies.at n=7A183284
• T(n,k) = Half the number of n X k binary arrays with the number of 1-1 horizontal, vertical, diagonal and antidiagonal adjacencies equal to the number of 0-0 adjacencies.at n=47A183289