a(n) = floor(7^7/n).

Terms

a(0) =823543a(1) =411771a(2) =274514a(3) =205885a(4) =164708a(5) =137257a(6) =117649a(7) =102942a(8) =91504a(9) =82354a(10) =74867a(11) =68628a(12) =63349a(13) =58824a(14) =54902a(15) =51471a(16) =48443a(17) =45752a(18) =43344a(19) =41177a(20) =39216a(21) =37433a(22) =35806a(23) =34314a(24) =32941a(25) =31674a(26) =30501a(27) =29412a(28) =28398a(29) =27451