135768

Appears in sequences

• Number of n X 4 binary arrays with top left element equal to 1 and no two ones adjacent horizontally or nw-se.at n=6A228792
• T(n,k)=Number of nXk binary arrays with top left element equal to 1 and no two ones adjacent horizontally or nw-se.at n=51A228796
• Number of 7Xn binary arrays with top left element equal to 1 and no two ones adjacent horizontally or nw-se.at n=3A228802
• The number of grains of sand in the identity element for the 3D sandpile group on an n X n X n cubic grid.at n=32A351379