a(n) = smallest k such that A141501(k) = 2*n+1.

Terms

a(0) =1a(1) =2a(2) =4a(3) =6a(4) =12a(5) =30a(6) =24a(7) =72a(8) =60a(9) =144a(10) =120a(11) =180a(12) =240a(13) =360a(14) =1008a(15) =720a(16) =1440a(17) =840a(18) =1260a(19) =3780a(20) =7920a(21) =3360a(22) =10920a(23) =2520a(24) =7560a(25) =5040a(26) =10080a(27) =69300a(28) =15120a(29) =864864