Number of -n..n arrays x(0..4) of 5 elements with zero sum and elements alternately strictly increasing and strictly decreasing.

A200059

Number of -n..n arrays x(0..4) of 5 elements with zero sum and elements alternately strictly increasing and strictly decreasing.

Terms

    a(0) =6a(1) =68a(2) =288a(3) =840a(4) =1948a(5) =3914a(6) =7074a(7) =11862a(8) =18732a(9) =28244a(10) =40970a(11) =57598a(12) =78816a(13) =105444a(14) =138284a(15) =178282a(16) =226362a(17) =283598a(18) =351026a(19) =429852a(20) =521230a(21) =626492a(22) =746910a(23) =883944a(24) =1038982a(25) =1213616a(26) =1409348a(27) =1627896a(28) =1870884a(29) =2140158

External references