a(n) is the least positive integer k such that the points (p_i, e_i) lie on a straight line with nonzero slope, where p_1^e_1*...*p_n^e_n is the canonical prime factorization of k.
A389339
a(n) is the least positive integer k such that the points (p_i, e_i) lie on a straight line with nonzero slope, where p_1^e_1*...*p_n^e_n is the canonical prime factorization of k.
Terms
- a(0) =2a(1) =12a(2) =2160a(3) =13608000
External references
- oeis: A389339