291908

Appears in sequences

• Number of ways to place 6 nonattacking kings on a 6 X n board.at n=6A172205
• 1/4 the number of (n+1) X 5 0..2 arrays with every 2 X 2 subblock having distinct edge sums.at n=9A209378
• a(n) = (n - 1)*(n - 2)*(5*n^4 + 3*n^3 + 34*n^2 - 264*n + 180)/360.at n=17A238108