Number of 0..n arrays x(0..3) of 4 elements without any interior element greater than both neighbors or less than both neighbors.

A200872

Number of 0..n arrays x(0..3) of 4 elements without any interior element greater than both neighbors or less than both neighbors.

Terms

    a(0) =10a(1) =37a(2) =94a(3) =195a(4) =356a(5) =595a(6) =932a(7) =1389a(8) =1990a(9) =2761a(10) =3730a(11) =4927a(12) =6384a(13) =8135a(14) =10216a(15) =12665a(16) =15522a(17) =18829a(18) =22630a(19) =26971a(20) =31900a(21) =37467a(22) =43724a(23) =50725a(24) =58526a(25) =67185a(26) =76762a(27) =87319a(28) =98920a(29) =111631

External references