Number of -n..n arrays x(0..7) of 8 elements with zero sum and nonzero second and third differences.

A200209

Number of -n..n arrays x(0..7) of 8 elements with zero sum and nonzero second and third differences.

Terms

    a(0) =192a(1) =16092a(2) =217946a(3) =1453304a(4) =6428538a(5) =21939870a(6) =62361448a(7) =154585536a(8) =345422978a(9) =710643132a(10) =1366075526a(11) =2483991350a(12) =4309599382a(13) =7180688000a(14) =11557570298a(15) =18048274072a(16) =27438624488a(17) =40742003838a(18) =59232871060a(19) =84489363024

External references