Number of lower triangular n X n arrays colored with integers 0 upwards introduced in row major order, with no element equal to any horizontal or vertical neighbor.
A182192
Number of lower triangular n X n arrays colored with integers 0 upwards introduced in row major order, with no element equal to any horizontal or vertical neighbor.
Terms
- a(0) =1a(1) =2a(2) =42a(3) =12840a(4) =87852626
External references
- oeis: A182192