Number of 0..7 arrays x(0..n+1) of n+2 elements without any interior element greater than both neighbors or less than both neighbors.
A200870
Number of 0..7 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) =232a(1) =932a(2) =3704a(3) =14932a(4) =60112a(5) =241718a(6) =971416a(7) =3904290a(8) =15693816a(9) =63085186a(10) =253583656a(11) =1019321774a(12) =4097329180a(13) =16469898636a(14) =66203547550a(15) =266116375576
External references
- oeis: A200870