a(n) is the least term of A126684 of the form k*n with k > 0.

Terms

a(0) =0a(1) =1a(2) =2a(3) =21a(4) =4a(5) =5a(6) =42a(7) =21a(8) =8a(9) =81a(10) =10a(11) =341a(12) =84a(13) =65a(14) =42a(15) =1365a(16) =16a(17) =17a(18) =162a(19) =1045a(20) =20a(21) =21a(22) =682a(23) =69a(24) =168a(25) =325a(26) =130a(27) =81a(28) =84a(29) =261