110952

Appears in sequences

• Quadruples a>b>c>d>0 such that six pairwise sums and the total sum are all squares.at n=0A175535
• Integers k such that there exists an integer 0<m<k such that (1/sigma(m)^2 + 1/sigma(k)^2)*(m+k)^2 = 1.at n=26A383964