a(n) is the smallest odd number that is greater than n^2 and is the product of two distinct primes.

Terms

a(0) =15a(1) =15a(2) =15a(3) =21a(4) =33a(5) =39a(6) =51a(7) =65a(8) =85a(9) =111a(10) =123a(11) =145a(12) =177a(13) =201a(14) =235a(15) =259a(16) =291a(17) =327a(18) =365a(19) =403a(20) =445a(21) =485a(22) =533a(23) =579a(24) =629a(25) =679a(26) =731a(27) =785a(28) =843a(29) =901