-3122

Appears in sequences

• Coefficients of expansion of 1/xi_0(y)^2 (see A195980 for definition).at n=12A195982
• Triangle read by rows: T(n,k) is the coefficient A_k in the transformation Sum_{k=0..n} x^k = Sum_{k=0..n} A_k*(x+3*(-1)^k)^k.at n=17A249268