Denominators of "Farey fraction" approximations to e.

Terms

a(0) =0a(1) =1a(2) =1a(3) =1a(4) =1a(5) =2a(6) =3a(7) =4a(8) =7a(9) =11a(10) =18a(11) =25a(12) =32a(13) =39a(14) =71a(15) =110a(16) =181a(17) =252a(18) =323a(19) =394a(20) =465a(21) =536a(22) =1001a(23) =1537a(24) =2538a(25) =3539a(26) =4540a(27) =5541a(28) =6542a(29) =7543