Triangle T(n, k, q) = (1-q^n)*(1/k)*binomial(n-1, k-1)*binomial(n, k-1) - (1-q^n) + 1, for q = 2, read by rows.

A174731

Triangle T(n, k, q) = (1-q^n)*(1/k)*binomial(n-1, k-1)*binomial(n, k-1) - (1-q^n) + 1, for q = 2, read by rows.

Terms

    a(0) =1a(1) =1a(2) =1a(3) =1a(4) =-13a(5) =1a(6) =1a(7) =-74a(8) =-74a(9) =1a(10) =1a(11) =-278a(12) =-588a(13) =-278a(14) =1a(15) =1a(16) =-881a(17) =-3086a(18) =-3086a(19) =-881a(20) =1a(21) =1a(22) =-2539a(23) =-13207a(24) =-22097a(25) =-13207a(26) =-2539a(27) =1a(28) =1a(29) =-6884

External references