Powers of e^(1/e) rounded up.

Terms

a(0) =1a(1) =2a(2) =3a(3) =4a(4) =5a(5) =7a(6) =10a(7) =14a(8) =19a(9) =28a(10) =40a(11) =58a(12) =83a(13) =120a(14) =173a(15) =250a(16) =360a(17) =521a(18) =752a(19) =1086a(20) =1569a(21) =2266a(22) =3273a(23) =4728a(24) =6831a(25) =9868a(26) =14256a(27) =20594a(28) =29752a(29) =42981