14725620
domain: N
Appears in sequences
- From paths in the plane.at n=12A006859
- a(n) = binomial(n+3,3)*binomial(n+6,3).at n=25A105939
- Let S(n)=sigma(|n|)/2-n; sequence gives numbers n such that S(S(S(S(n))))=n. May be called {1,2}-sociable number of orders 1 or 2 or 4.at n=28A114529
- Numbers n such that there exists an x!=n that makes {n,n,x,x} an amicable multiset.at n=21A259306