Round(1/s(n)), where s(n) = n*log(1+1/n) - (2n-1)/(2n).

Terms

a(0) =5a(1) =16a(2) =34a(3) =57a(4) =86a(5) =121a(6) =163a(7) =210a(8) =263a(9) =322a(10) =388a(11) =459a(12) =536a(13) =619a(14) =709a(15) =804a(16) =905a(17) =1012a(18) =1126a(19) =1245a(20) =1370a(21) =1501a(22) =1639a(23) =1782a(24) =1931a(25) =2086a(26) =2248a(27) =2415a(28) =2588a(29) =2767