4546080

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=11A273969
• E.g.f.: Product_{m>0} (1+x^m+x^(2*m)/2!+x^(3*m)/3!).at n=9A293195
• E.g.f. satisfies A(x)^A(x) = 1/(1 - x)^(x^2/2).at n=11A356912