Number of nX7 0..1 arrays with rows and columns lexicographically nondecreasing and every element equal to at least one horizontal or vertical neighbor.
A201352
Number of nX7 0..1 arrays with rows and columns lexicographically nondecreasing and every element equal to at least one horizontal or vertical neighbor.
Terms
- a(0) =6a(1) =54a(2) =585a(3) =9111a(4) =164704a(5) =3030673a(6) =53350918a(7) =867792264a(8) =12855063828a(9) =173064550218
External references
- oeis: A201352