Number of numbers <= 10^n with no prime factor greater than n.

Terms

a(0) =0a(1) =6a(2) =39a(3) =66a(4) =312a(5) =506a(6) =2154a(7) =3426a(8) =5193a(9) =7574a(10) =30523a(11) =44695a(12) =173076a(13) =254064a(14) =364384a(15) =511984a(16) =1945204a(17) =2749999a(18) =10159602a(19) =14427308a(20) =20186025a(21) =27861174a(22) =101837745a(23) =141340074a(24) =193902061a(25) =263152094a(26) =353549941a(27) =470539446a(28) =1730528206a(29) =2319027316