Number of (n+1) X (3+1) 0..7 arrays with every 2 X 2 subblock having the sum of the absolute values of all six edge and diagonal differences equal to 21.

A233871

Number of (n+1) X (3+1) 0..7 arrays with every 2 X 2 subblock having the sum of the absolute values of all six edge and diagonal differences equal to 21.

Terms

    a(0) =5984a(1) =26488a(2) =139880a(3) =907940a(4) =6146640a(5) =46051092a(6) =343425768a(7) =2756337624a(8) =21588683624a(9) =180216035036

External references