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

Terms

a(0) =1a(1) =1a(2) =1a(3) =11a(4) =7a(5) =19a(6) =16a(7) =117a(8) =269a(9) =877a(10) =1003a(11) =11243a(12) =4261a(13) =56163a(14) =61883a(15) =199663a(16) =107339a(17) =919889a(18) =2009948a(19) =38444267a(20) =41354174a(21) =43432679a(22) =46078049a(23) =266161243a(24) =379669754a(25) =387106183a(26) =407127338a(27) =1258564159a(28) =1322304979a(29) =19229195413