T(n,k)=Number of nXk 0..1 arrays with no 1 equal to more than three of its horizontal, vertical and antidiagonal neighbors, with the exception of exactly two elements.
A283522
T(n,k)=Number of nXk 0..1 arrays with no 1 equal to more than three of its horizontal, vertical and antidiagonal neighbors, with the exception of exactly two elements.
Terms
- a(0) =0a(1) =0a(2) =0a(3) =0a(4) =0a(5) =0a(6) =0a(7) =1a(8) =1a(9) =0a(10) =0a(11) =5a(12) =20a(13) =5a(14) =0a(15) =0a(16) =28a(17) =270a(18) =270a(19) =28a(20) =0a(21) =0a(22) =145a(23) =2763a(24) =5988a(25) =2763a(26) =145a(27) =0a(28) =0a(29) =703
External references
- oeis: A283522