a(n+1) = a(n) + sum of digits of a(n) starting with 121.

Terms

a(0) =121a(1) =125a(2) =133a(3) =140a(4) =145a(5) =155a(6) =166a(7) =179a(8) =196a(9) =212a(10) =217a(11) =227a(12) =238a(13) =251a(14) =259a(15) =275a(16) =289a(17) =308a(18) =319a(19) =332a(20) =340a(21) =347a(22) =361a(23) =371a(24) =382a(25) =395a(26) =412a(27) =419a(28) =433a(29) =443