54944domain: NAppears in sequencesIntegers that are Rhonda numbers to base 9.at n=8A100973a(n) = Sum_{1 <= i, j, k, l <= n} gcd(i,j,k,l).at n=14A344523Nonunitary near-perfect numbers: k such that nusigma(k) = k + d where d is a nonunitary divisor of k.at n=25A362969Numbers k such that k^5*2^k - 1 is a prime.at n=24A367464