a(n) is the least number with exactly n divisors of the form 5*k+1.

Terms

a(0) =1a(1) =6a(2) =36a(3) =66a(4) =252a(5) =336a(6) =672a(7) =1008a(8) =3528a(9) =2016a(10) =4032a(11) =3696a(12) =9072a(13) =7392a(14) =13104a(15) =11088a(16) =36288a(17) =38304a(18) =26208a(19) =22176a(20) =68544a(21) =44352a(22) =91728a(23) =66528a(24) =154224a(25) =99792a(26) =209664a(27) =96096a(28) =301392a(29) =144144