Number of (n+1)X(1+1) 0..7 arrays with every 2X2 subblock having the sum of the absolute values of all six edge and diagonal differences equal to 21.

A233869

Number of (n+1)X(1+1) 0..7 arrays with every 2X2 subblock having the sum of the absolute values of all six edge and diagonal differences equal to 21.

Terms

    a(0) =224a(1) =1176a(2) =5984a(3) =34416a(4) =189632a(5) =1128928a(6) =6414208a(7) =38622656a(8) =222041856a(9) =1341849472a(10) =7749914112a(11) =46887986944a(12) =271306185728

External references