a(n) is the minimal number z having the largest number of solutions to the Diophantine equation 1/z = 1/x + 1/y such that 1 <= x <= y <= 10^n.
A352881
a(n) is the minimal number z having the largest number of solutions to the Diophantine equation 1/z = 1/x + 1/y such that 1 <= x <= y <= 10^n.
Terms
- a(0) =2a(1) =12a(2) =60a(3) =840a(4) =9240a(5) =55440a(6) =720720a(7) =6126120a(8) =116396280a(9) =232792560a(10) =5354228880a(11) =26771144400a(12) =465817912560
External references
- oeis: A352881