155125domain: NAppears in sequencesNumbers n that are the hypotenuse of exactly 31 distinct integer-sided right triangles, i.e., n^2 can be written as a sum of two squares in 31 ways.at n=23A097244Row sums of triangle defined in A095181.at n=24A160915Numbers k that divide 5^k + 3^k + 2^k.at n=19A220170