Number of 12-almost primes 12ap such that 2^n < 12ap <= 2^(n+1).

Terms

a(0) =0a(1) =0a(2) =0a(3) =0a(4) =0a(5) =0a(6) =0a(7) =0a(8) =0a(9) =0a(10) =0a(11) =1a(12) =1a(13) =5a(14) =8a(15) =22a(16) =47a(17) =103a(18) =234a(19) =492a(20) =1082a(21) =2271a(22) =4867a(23) =10349a(24) =21794a(25) =45907a(26) =96293a(27) =202006a(28) =421287a(29) =879388