Number of -5..5 arrays x(0..n-1) of n elements with zero sum and elements alternately strictly increasing and strictly decreasing.

A200054

Number of -5..5 arrays x(0..n-1) of n elements with zero sum and elements alternately strictly increasing and strictly decreasing.

Terms

    a(0) =1a(1) =10a(2) =56a(3) =324a(4) =1948a(5) =11962a(6) =74338a(7) =466548a(8) =2947742a(9) =18746754a(10) =119701782a(11) =767860824a(12) =4938868628a(13) =31876070432a(14) =206122332340

External references