Number of -n..n arrays x(0..5) of 6 elements with zero sum and nonzero second and third differences.

A200207

Number of -n..n arrays x(0..5) of 6 elements with zero sum and nonzero second and third differences.

Terms

    a(0) =50a(1) =1042a(2) =6418a(3) =24542a(4) =70400a(5) =168054a(6) =352840a(7) =672632a(8) =1191380a(9) =1990668a(10) =3169582a(11) =4851400a(12) =7182342a(13) =10332674a(14) =14504130a(15) =19925886a(16) =26858060a(17) =35599134a(18) =46482708a(19) =59877540a(20) =76196440a(21) =95896240a(22) =119471266a(23) =147472836a(24) =180499346a(25) =219187302

External references