-1166803110domain: ZAppears in sequencesa(n) = binomial(2*n-1, n)*(-1)^n.at n=17A110556Inverse binomial transform of A005043.at n=33A126930First term of n-th difference sequence of (round(k*phi)), phi = golden ratio = (1+sqrt(5))/2, k >= 0.at n=33A325844