Number of 0..6 arrays x(0..n+1) of n+2 elements without any interior element greater than both neighbors or less than both neighbors.
A200869
Number of 0..6 arrays x(0..n+1) of n+2 elements without any interior element greater than both neighbors or less than both neighbors.
Terms
- a(0) =161a(1) =595a(2) =2163a(3) =7973a(4) =29325a(5) =107777a(6) =395929a(7) =1454643a(8) =5344795a(9) =19638715a(10) =72159035a(11) =265134245a(12) =974183489a(13) =3579448271a(14) =13151993143a(15) =48324463973a(16) =177558916493a(17) =652405957937
External references
- oeis: A200869