1458660

Appears in sequences

• First integer reached when starting with n/floor(log_2(n)) and iterating the map x -> x*ceiling(x) A075107(n) times, or -1 if no integer is ever reached.at n=21A075108
• First integer reached when starting with n/floor(sqrt(n)) and iterating the map x -> x*ceiling(x) A075120(n) times, or -1 if no integer is ever reached.at n=22A075121
• a(n) = (8*n - 3)*(4*n - 1)*(8*n^2 - 5*n + 1).at n=9A081854