Number of n X 2 0..1 arrays with no element less than a strict majority of its horizontal, vertical and antidiagonal neighbors.
A231538
Number of n X 2 0..1 arrays with no element less than a strict majority of its horizontal, vertical and antidiagonal neighbors.
Terms
- a(0) =2a(1) =6a(2) =20a(3) =57a(4) =164a(5) =485a(6) =1424a(7) =4169a(8) =12228a(9) =35868a(10) =105177a(11) =308433a(12) =904520a(13) =2652574a(14) =7778858a(15) =22812126a(16) =66898367a(17) =196184665a(18) =575326896a(19) =1687191264a(20) =4947820577a(21) =14509871545a(22) =42551335553a(23) =124785126404a(24) =365942162811
External references
- oeis: A231538