29436domain: NAppears in sequencesNumber of distinct products of subsets of integers in the interval [n^2+1, (n+1)^2-1] which are twice a square.at n=53A099500a(n) = 841*n + 1.at n=34A158404Expansion of (x-5*x^2+11*x^3-12*x^4+7*x^5-2*x^6+x^7) / (1-6*x+15*x^2-20*x^3+15*x^4-6*x^5+x^6).at n=23A221948