Number of n X n 0..2 arrays with no element equal to the sum modulo 3 of elements to its left or elements above it.
A238719
Number of n X n 0..2 arrays with no element equal to the sum modulo 3 of elements to its left or elements above it.
Terms
- a(0) =2a(1) =4a(2) =40a(3) =284a(4) =11440a(5) =296384a(6) =43248968a(7) =4105077596
External references
- oeis: A238719