Number of nX2 0..1 arrays with no 1 equal to more than one of its horizontal, vertical and antidiagonal neighbors, with the exception of exactly two elements.
A282963
Number of nX2 0..1 arrays with no 1 equal to more than one of its horizontal, vertical and antidiagonal neighbors, with the exception of exactly two elements.
Terms
- a(0) =0a(1) =0a(2) =5a(3) =17a(4) =75a(5) =295a(6) =1062a(7) =3811a(8) =13107a(9) =44498a(10) =148305a(11) =488130a(12) =1588811a(13) =5122801a(14) =16384193a(15) =52029375a(16) =164193163a(17) =515276894a(18) =1609014076a(19) =5001795369a(20) =15485379275a(21) =47764505823a(22) =146829462806a(23) =449951243863
External references
- oeis: A282963