1620567764domain: NAppears in sequencesExpansion of (1/2)*(1/(x+1)+1/(sqrt(-3*x^2-2*x+1))).at n=22A246437Number of factorizations of m^2 into 2 factors, where m is a product of exactly n distinct primes and each factor is a product of n primes (counted with multiplicity).at n=22A257520