Number of n X n 0..1 arrays with no element equal to more than one of its horizontal and antidiagonal neighbors, with the exception of exactly two elements, and with new values introduced in order 0 sequentially upwards.
A281049
Number of n X n 0..1 arrays with no element equal to more than one of its horizontal and antidiagonal neighbors, with the exception of exactly two elements, and with new values introduced in order 0 sequentially upwards.
Terms
- a(0) =0a(1) =1a(2) =68a(3) =1022a(4) =7803a(5) =46610a(6) =221212a(7) =926077a(8) =3549039a(9) =12749511a(10) =43675963a(11) =144504080a(12) =466130380
External references
- oeis: A281049