Number of (n+1)X(5+1) 0..1 arrays with every 2X2 subblock having one or two 1s.
A251323
Number of (n+1)X(5+1) 0..1 arrays with every 2X2 subblock having one or two 1s.
Terms
- a(0) =618a(1) =8218a(2) =104058a(3) =1405454a(4) =18415674a(5) =246926340a(6) =3265612528a(7) =43595364706a(8) =578517868594
External references
- oeis: A251323