T(n,k)=Hilltop maps: number of nXk binary arrays indicating the locations of corresponding elements not exceeded by any horizontal or vertical neighbor in a random 0..4 nXk array.
A218288
T(n,k)=Hilltop maps: number of nXk binary arrays indicating the locations of corresponding elements not exceeded by any horizontal or vertical neighbor in a random 0..4 nXk array.
Terms
- a(0) =1a(1) =3a(2) =3a(3) =7a(4) =15a(5) =7a(6) =15a(7) =63a(8) =63a(9) =15a(10) =31a(11) =255a(12) =511a(13) =255a(14) =31a(15) =61a(16) =1019a(17) =4091a(18) =4091a(19) =1019a(20) =61a(21) =121a(22) =4073a(23) =32739a(24) =65507a(25) =32739a(26) =4073a(27) =121a(28) =241a(29) =16289
External references
- oeis: A218288