Number of 0..n arrays x(0..8) of 9 elements without any interior element greater than both neighbors.

A200892

Number of 0..n arrays x(0..8) of 9 elements without any interior element greater than both neighbors.

Terms

    a(0) =200a(1) =4059a(2) =34350a(3) =181336a(4) =710976a(5) =2269938a(6) =6233356a(7) =15250675a(8) =34054592a(9) =70608021a(10) =137674186a(11) =254905378a(12) =451556600a(13) =769941268a(14) =1269757336a(15) =2033423669a(16) =3172578200a(17) =4835901375a(18) =7218440614a(19) =10572623996a(20) =15221164112a(21) =21572066022

External references