A symmetrical triangle sequence T(n, m) = 2 + binomial(n, m)^3 - 3*binomial(n, m)*Eulerian(n+1, m) + Eulerian(n+1, m)^3.

A174914

A symmetrical triangle sequence T(n, m) = 2 + binomial(n, m)^3 - 3*binomial(n, m)*Eulerian(n+1, m) + Eulerian(n+1, m)^3.

Terms

    a(0) =1a(1) =1a(2) =1a(3) =1a(4) =50a(5) =1a(6) =1a(7) =1261a(8) =1261a(9) =1a(10) =1a(11) =17330a(12) =286526a(13) =17330a(14) =1a(15) =1a(16) =184465a(17) =27535550a(18) =27535550a(19) =184465a(20) =1a(21) =1a(22) =1726058a(23) =1689360653a(24) =14102190338a(25) =1689360653a(26) =1726058a(27) =1a(28) =1a(29) =15064381

External references