Number of (n+1)X(7+1) 0..1 arrays with no 2X2 subblock having zero or two 1s.
A251218
Number of (n+1)X(7+1) 0..1 arrays with no 2X2 subblock having zero or two 1s.
Terms
- a(0) =1477a(1) =17119a(2) =206715a(3) =2746607a(4) =35978029a(5) =482274751a(6) =6424279907a(7) =86110233175
External references
- oeis: A251218