Number of (n+1) X 4 0..3 arrays with every 2 X 2 subblock sum equal to exactly one or two horizontal and vertical neighbor 2 X 2 subblock sums.
A188369
Number of (n+1) X 4 0..3 arrays with every 2 X 2 subblock sum equal to exactly one or two horizontal and vertical neighbor 2 X 2 subblock sums.
Terms
- a(0) =1936a(1) =315520a(2) =11342816a(3) =716732884a(4) =34292827560
External references
- oeis: A188369