Number of 0..n arrays x(0..4) of 5 elements without any interior element greater than both neighbors.

A200888

Number of 0..n arrays x(0..4) of 5 elements without any interior element greater than both neighbors.

Terms

    a(0) =21a(1) =121a(2) =422a(3) =1121a(4) =2507a(5) =4977a(6) =9052a(7) =15393a(8) =24817a(9) =38313a(10) =57058a(11) =82433a(12) =116039a(13) =159713a(14) =215544a(15) =285889a(16) =373389a(17) =480985a(18) =611934a(19) =769825a(20) =958595a(21) =1182545a(22) =1446356a(23) =1755105a(24) =2114281a(25) =2529801a(26) =3008026a(27) =3555777a(28) =4180351a(29) =4889537

External references