Add 7, then reverse digits.

Terms

a(0) =0a(1) =7a(2) =41a(3) =84a(4) =19a(5) =62a(6) =96a(7) =301a(8) =803a(9) =18a(10) =52a(11) =95a(12) =201a(13) =802a(14) =908a(15) =519a(16) =625a(17) =236a(18) =342a(19) =943a(20) =59a(21) =66a(22) =37a(23) =44a(24) =15a(25) =22a(26) =92a(27) =99a(28) =601a(29) =806