Integer nearest n * e, where e is the natural log base.

Terms

a(0) =0a(1) =3a(2) =5a(3) =8a(4) =11a(5) =14a(6) =16a(7) =19a(8) =22a(9) =24a(10) =27a(11) =30a(12) =33a(13) =35a(14) =38a(15) =41a(16) =43a(17) =46a(18) =49a(19) =52a(20) =54a(21) =57a(22) =60a(23) =63a(24) =65a(25) =68a(26) =71a(27) =73a(28) =76a(29) =79