204645

Appears in sequences

• a(n) = n*(n^3+n^2+2*n+1).at n=21A186636
• Number of nXn 0..1 arrays with every element unequal to 0, 1, 3 or 4 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.at n=6A318030
• Number of nX7 0..1 arrays with every element unequal to 0, 1, 3 or 4 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.at n=6A318036