12-almost primes (generalization of semiprimes).

Terms

a(0) =4096a(1) =6144a(2) =9216a(3) =10240a(4) =13824a(5) =14336a(6) =15360a(7) =20736a(8) =21504a(9) =22528a(10) =23040a(11) =25600a(12) =26624a(13) =31104a(14) =32256a(15) =33792a(16) =34560a(17) =34816a(18) =35840a(19) =38400a(20) =38912a(21) =39936a(22) =46656a(23) =47104a(24) =48384a(25) =50176a(26) =50688a(27) =51840a(28) =52224a(29) =53760