Hilltop maps: number of n X 3 binary arrays indicating the locations of corresponding elements not exceeded by any king-move neighbor in a random 0..2 n X 3 array.
A218314
Hilltop maps: number of n X 3 binary arrays indicating the locations of corresponding elements not exceeded by any king-move neighbor in a random 0..2 n X 3 array.
Terms
- a(0) =7a(1) =63a(2) =511a(3) =4081a(4) =32641a(5) =261121a(6) =2088919a(7) =16710911a(8) =133683711a(9) =1069441121a(10) =8555300481a(11) =68440576001a(12) =547509985575
External references
- oeis: A218314