a(n) = the largest n-digit number with exactly 9 divisors, a(n) = 0 if no such number exists.
A182678
a(n) = the largest n-digit number with exactly 9 divisors, a(n) = 0 if no such number exists.
Terms
- a(0) =0a(1) =36a(2) =676a(3) =9025a(4) =98596a(5) =996004a(6) =9991921a(7) =99960004a(8) =999887641a(9) =9999600004a(10) =99998883076a(11) =999994000009
External references
- oeis: A182678