Numbers k such that k >= d(k)^2, where d(k) is the number of divisors of k.

Terms

a(0) =1a(1) =5a(2) =7a(3) =9a(4) =11a(5) =13a(6) =17a(7) =19a(8) =21a(9) =22a(10) =23a(11) =25a(12) =26a(13) =27a(14) =29a(15) =31a(16) =33a(17) =34a(18) =35a(19) =37a(20) =38a(21) =39a(22) =41a(23) =43a(24) =44a(25) =45a(26) =46a(27) =47a(28) =49a(29) =50