Number of -n..n arrays x(0..4) of 5 elements with zero sum and nonzero first and second differences.

A200457

Number of -n..n arrays x(0..4) of 5 elements with zero sum and nonzero first and second differences.

Terms

    a(0) =6a(1) =144a(2) =728a(3) =2334a(4) =5720a(5) =12002a(6) =22276a(7) =38174a(8) =61290a(9) =93704a(10) =137374a(11) =194964a(12) =268842a(13) =362092a(14) =477620a(15) =618954a(16) =789324a(17) =992970a(18) =1233412a(19) =1515270a(20) =1842742a(21) =2220844a(22) =2654034a(23) =3148080a(24) =3707758a(25) =4339192a(26) =5047836a(27) =5840186a(28) =6721964a(29) =7700510

External references