Number of (n+1)X(2+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.
A233870
Number of (n+1)X(2+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) =1176a(1) =5404a(2) =26488a(3) =155104a(4) =909408a(5) =5878272a(6) =36964980a(7) =249710396a(8) =1622032500a(9) =11215026376a(10) =74076824924a(11) =518810087196
External references
- oeis: A233870