129308domain: NAppears in sequencesLet M(n) = maximal value of (n/k)^k over all k = 1, 2, ...; a(n) = round(M(n)).at n=31A139077Let M(n) = maximal value of (n/k)^k over all k = 1, 2, ...; a(n) = ceiling(M(n)).at n=31A139078Maximum water retention of a number square of order n.at n=23A261347