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

Terms

a(0) =1a(1) =1a(2) =2a(3) =3a(4) =4a(5) =6a(6) =9a(7) =13a(8) =18a(9) =27a(10) =39a(11) =57a(12) =82a(13) =119a(14) =172a(15) =249a(16) =359a(17) =520a(18) =751a(19) =1085a(20) =1568a(21) =2265a(22) =3272a(23) =4727a(24) =6830a(25) =9867a(26) =14255a(27) =20593a(28) =29751a(29) =42980