Hilltop maps: number of n X 1 binary arrays indicating the locations of corresponding elements not exceeded by any horizontal or vertical neighbor in a random 0..2 n X 1 array.
A218199
Hilltop maps: number of n X 1 binary arrays indicating the locations of corresponding elements not exceeded by any horizontal or vertical neighbor in a random 0..2 n X 1 array.
Terms
- a(0) =1a(1) =3a(2) =7a(3) =13a(4) =25a(5) =49a(6) =97a(7) =191a(8) =375a(9) =737a(10) =1449a(11) =2849a(12) =5601a(13) =11011a(14) =21647a(15) =42557a(16) =83665a(17) =164481a(18) =323361a(19) =635711a(20) =1249775a(21) =2456993a(22) =4830321a(23) =9496161a(24) =18668961a(25) =36702211a(26) =72154647a(27) =141852301a(28) =278874281a(29) =548252401
External references
- oeis: A218199