85290domain: NAppears in sequencesExpansion of 1/(1 - x^5/(1-x)^6).at n=18A369794a(n) = Sum_{k=0..floor(2*n/5)} binomial(k+1,2*n-5*k).at n=49A390020a(n) = Sum_{k=0..floor(3*n/5)} binomial(k+2,3*n-5*k).at n=31A390034