259074domain: NAppears in sequencesExpansion of Product_{k>=1} (1 + x^k)^(sigma_4(k)).at n=8A301548Numbers k such that there are exactly 9 numbers j for which binomial(k, floor(k/2)) / binomial(k,j) is an integer, i.e., A080383(k) = 9.at n=32A327431