a(n) = smallest k such that prime(n) is the n-th largest divisor of k.

Terms

a(0) =2a(1) =6a(2) =20a(3) =42a(4) =154a(5) =156a(6) =306a(7) =836a(8) =552a(9) =1044a(10) =1488a(11) =2960a(12) =2460a(13) =3870a(14) =7050a(15) =12084a(16) =8496a(17) =10248a(18) =14070a(19) =12780a(20) =18396a(21) =31284a(22) =50796a(23) =38448a(24) =55872a(25) =82416a(26) =37080a(27) =51360a(28) =65400a(29) =88140