Number of 0..4 arrays x(0..n+1) of n+2 elements without any interior element greater than both neighbors.

A200882

Number of 0..4 arrays x(0..n+1) of n+2 elements without any interior element greater than both neighbors.

Terms

    a(0) =95a(1) =325a(2) =1121a(3) =3985a(4) =14288a(5) =50995a(6) =181336a(7) =644721a(8) =2294193a(9) =8166441a(10) =29066618a(11) =103444256a(12) =368138471a(13) =1310164527a(14) =4662787112a(15) =16594519920a(16) =59058487061a(17) =210183969235a(18) =748026706926

External references