Hilltop maps: number of 3Xn binary arrays indicating the locations of corresponding elements not exceeded by any horizontal or antidiagonal neighbor in a random 0..2 3Xn array.
A218594
Hilltop maps: number of 3Xn binary arrays indicating the locations of corresponding elements not exceeded by any horizontal or antidiagonal neighbor in a random 0..2 3Xn array.
Terms
- a(0) =1a(1) =49a(2) =449a(3) =3565a(4) =28325a(5) =225647a(6) =1798967a(7) =14344301a(8) =114371203a(9) =911903915a(10) =7270785113a(11) =57971383761a(12) =462217176543
External references
- oeis: A218594