a(n) is the least positive integer k such that it has exactly n triples of divisors (d1, d2, d3) such that they are pairwise coprime and d1 < d2 < d3 < 2*d1.
A336629
a(n) is the least positive integer k such that it has exactly n triples of divisors (d1, d2, d3) such that they are pairwise coprime and d1 < d2 < d3 < 2*d1.
Terms
- a(0) =1a(1) =60a(2) =7140a(3) =60060a(4) =251940a(5) =360360a(6) =1369368a(7) =1225224a(8) =1531530a(9) =7873866a(10) =17687670a(11) =5819814a(12) =17160990a(13) =11085360a(14) =11741730a(15) =19399380a(16) =65564070a(17) =9699690a(18) =99533742a(19) =85804950a(20) =40562340a(21) =90485220a(22) =358888530a(23) =504894390a(24) =634956630a(25) =531990690a(26) =397687290a(27) =512942430a(28) =455885430a(29) =514083570
External references
- oeis: A336629