Representing n as sum of increasing powers.

Terms

a(0) =1a(1) =2a(2) =3a(3) =1a(4) =2a(5) =3a(6) =4a(7) =5a(8) =1a(9) =2a(10) =3a(11) =2a(12) =3a(13) =4a(14) =5a(15) =1a(16) =2a(17) =3a(18) =4a(19) =5a(20) =3a(21) =4a(22) =5a(23) =2a(24) =1a(25) =2a(26) =3a(27) =2a(28) =3a(29) =4