Numbers of the form i*9^j-1 (i=1..8, j >= 0).

Terms

a(0) =0a(1) =1a(2) =2a(3) =3a(4) =4a(5) =5a(6) =6a(7) =7a(8) =8a(9) =17a(10) =26a(11) =35a(12) =44a(13) =53a(14) =62a(15) =71a(16) =80a(17) =161a(18) =242a(19) =323a(20) =404a(21) =485a(22) =566a(23) =647a(24) =728a(25) =1457a(26) =2186a(27) =2915a(28) =3644a(29) =4373