Number of nX4 0..1 arrays with no 1 equal to more than one of its horizontal and vertical neighbors, with the exception of exactly two elements.
A283096
Number of nX4 0..1 arrays with no 1 equal to more than one of its horizontal and vertical neighbors, with the exception of exactly two elements.
Terms
- a(0) =1a(1) =28a(2) =600a(3) =8536a(4) =107007a(5) =1237504a(6) =13563911a(7) =142827186a(8) =1460284133a(9) =14581564714a(10) =142862876715
External references
- oeis: A283096