30998250

Appears in sequences

• Numbers m such that m = sigma(abs(k)) - 3k, where k = sigma(m) - 3m.at n=9A069146
• Let S(n)=sigma(|n|)-3*n; sequence gives numbers n such that S(S(S(S(n))))=n. May be called {3,1}-Sociable number of orders 1 or 2 or 4.at n=15A114528