Triangle whose n-th row contains the least set (ordered lexicographically) of n distinct positive integers whose geometric mean is an integer.
A080508
Triangle whose n-th row contains the least set (ordered lexicographically) of n distinct positive integers whose geometric mean is an integer.
Terms
- a(0) =1a(1) =1a(2) =4a(3) =1a(4) =2a(5) =4a(6) =1a(7) =2a(8) =3a(9) =216a(10) =1a(11) =2a(12) =3a(13) =4a(14) =324a(15) =1a(16) =2a(17) =3a(18) =4a(19) =5a(20) =6075000a(21) =1a(22) =2a(23) =3a(24) =4a(25) =5a(26) =6a(27) =30375000a(28) =1a(29) =2
External references
- oeis: A080508