a(n) is the numerator of the density of natural numbers m such that gcd(m,floor(m/n))=1.

Terms

a(0) =0a(1) =1a(2) =1a(3) =13a(4) =8a(5) =26a(6) =19a(7) =163a(8) =361a(9) =1223a(10) =1307a(11) =16477a(12) =5749a(13) =83977a(14) =88267a(15) =280817a(16) =147916a(17) =1377406a(18) =2839897a(19) =58552633a(20) =60492571a(21) =63263911a(22) =65468386a(23) =403117367a(24) =549883871a(25) =579629587a(26) =596790577a(27) =1864736021a(28) =1912541636a(29) =29293503812