13-almost primes (generalization of semiprimes).

Terms

a(0) =8192a(1) =12288a(2) =18432a(3) =20480a(4) =27648a(5) =28672a(6) =30720a(7) =41472a(8) =43008a(9) =45056a(10) =46080a(11) =51200a(12) =53248a(13) =62208a(14) =64512a(15) =67584a(16) =69120a(17) =69632a(18) =71680a(19) =76800a(20) =77824a(21) =79872a(22) =93312a(23) =94208a(24) =96768a(25) =100352a(26) =101376a(27) =103680a(28) =104448a(29) =107520