Number of -n..n arrays x(0..2) of 3 elements with zero sum and nonzero first and second differences.

A200455

Number of -n..n arrays x(0..2) of 3 elements with zero sum and nonzero first and second differences.

Terms

    a(0) =4a(1) =10a(2) =26a(3) =44a(4) =72a(5) =102a(6) =142a(7) =184a(8) =236a(9) =290a(10) =354a(11) =420a(12) =496a(13) =574a(14) =662a(15) =752a(16) =852a(17) =954a(18) =1066a(19) =1180a(20) =1304a(21) =1430a(22) =1566a(23) =1704a(24) =1852a(25) =2002a(26) =2162a(27) =2324a(28) =2496a(29) =2670

External references