1/4 the number of (n+1)X5 0..3 arrays with every 2X2 subblock having distinct edge sums.
A209732
1/4 the number of (n+1)X5 0..3 arrays with every 2X2 subblock having distinct edge sums.
Terms
- a(0) =3912a(1) =86744a(2) =1995752a(3) =47572464a(4) =1138541280a(5) =27425792944a(6) =660346502176
External references
- oeis: A209732