T(n,k)=Number of -k..k arrays x(0..n-1) of n elements with zero sum, adjacent elements differing by more than one, and elements alternately increasing and decreasing.

A200192

T(n,k)=Number of -k..k arrays x(0..n-1) of n elements with zero sum, adjacent elements differing by more than one, and elements alternately increasing and decreasing.

Terms

    a(0) =1a(1) =1a(2) =2a(3) =1a(4) =4a(5) =0a(6) =1a(7) =6a(8) =6a(9) =2a(10) =1a(11) =8a(12) =14a(13) =14a(14) =0a(15) =1a(16) =10a(17) =28a(18) =48a(19) =24a(20) =2a(21) =1a(22) =12a(23) =44a(24) =120a(25) =144a(26) =54a(27) =0a(28) =1a(29) =14

External references