75099domain: NAppears in sequencesNumber of (w,x,y,z) with all terms in {1,...,n} and w^2>x*y*z.at n=28A212066a(n) = Sum_{1 <= x_1 <= x_2 <= x_3 <= x_4 <= n} gcd(x_1, x_2, x_3 , x_4, n).at n=34A343518a(n) is the first number that is the start of a string of exactly n consecutive numbers in A358350.at n=26A359248