3461040

Appears in sequences

• Amicable quadruples: the numbers c referred to in A036471.at n=0A036473
• Triangle T(n,k) read by rows, which contains for 1<=k<=n the least amicable n-tuple T(n,1),..., T(n,n) such that sigma(T(n,k)) = T(n,1)+...+T(n,n).at n=8A233538