130664domain: NAppears in sequencesAssociated to determinants of skew-symmetric matrices related to Catalan-numbers or central binomial coefficients.at n=6A075845a(n) is the smallest j such that 1/2 + 1/5 + 1/8 + ... + 1/j exceeds n.at n=3A091464Numbers n such that there are precisely 14 groups of orders n and n + 1.at n=7A298431