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..3 nXk array.
A218196
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..3 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) =29a(11) =251a(12) =507a(13) =251a(14) =29a(15) =57a(16) =1001a(17) =4067a(18) =4067a(19) =1001a(20) =57a(21) =113a(22) =4001a(23) =32529a(24) =65251a(25) =32529a(26) =4001a(27) =113a(28) =225a(29) =16001
External references
- oeis: A218196