8225280

Appears in sequences

• Numbers n such that there exists a pair x,y, where x<y, x! = n and y! = n, that makes {x,y,n,n} an amicable multiset.at n=18A273969
• a(n) is the unique integer k such that A108951(k) = n!.at n=17A307035
• Numbers x such that there exist two integers 0<x<=y and z>0 such that sigma(x)^2 = sigma(y)^2 = x^2 + y^2 + z^2.at n=29A385356