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 = 3, read by rows.
A174732
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 = 3, read by rows.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =-51a(5) =1a(6) =1a(7) =-399a(8) =-399a(9) =1a(10) =1a(11) =-2177a(12) =-4597a(13) =-2177a(14) =1a(15) =1a(16) =-10191a(17) =-35671a(18) =-35671a(19) =-10191a(20) =1a(21) =1a(22) =-43719a(23) =-227343a(24) =-380363a(25) =-227343a(26) =-43719a(27) =1a(28) =1a(29) =-177119
External references
- oeis: A174732