Number of -n..n arrays x(0..3) of 4 elements with zero sum, adjacent elements differing by more than one, and elements alternately increasing and decreasing.

A200193

Number of -n..n arrays x(0..3) of 4 elements with zero sum, adjacent elements differing by more than one, and elements alternately increasing and decreasing.

Terms

    a(0) =2a(1) =14a(2) =48a(3) =120a(4) =242a(5) =426a(6) =688a(7) =1040a(8) =1494a(9) =2066a(10) =2768a(11) =3612a(12) =4614a(13) =5786a(14) =7140a(15) =8692a(16) =10454a(17) =12438a(18) =14660a(19) =17132a(20) =19866a(21) =22878a(22) =26180a(23) =29784a(24) =33706a(25) =37958a(26) =42552a(27) =47504a(28) =52826a(29) =58530

External references