Number of 0..n arrays x(0..6) of 7 elements without any interior element greater than both neighbors or less than both neighbors.

A200875

Number of 0..n arrays x(0..6) of 7 elements without any interior element greater than both neighbors or less than both neighbors.

Terms

    a(0) =42a(1) =343a(2) =1528a(3) =4917a(4) =12890a(5) =29325a(6) =60112a(7) =113745a(8) =201994a(9) =340659a(10) =550408a(11) =857701a(12) =1295802a(13) =1905881a(14) =2738208a(15) =3853441a(16) =5324010a(17) =7235599a(18) =9688728a(19) =12800437a(20) =16706074a(21) =21561189a(22) =27543536a(23) =34855185a(24) =43724746a(25) =54409707a(26) =67198888a(27) =82415013

External references