Repdigits (A010785), excluding repunits (A002275), ordered by product of digits (A007954).

Terms

a(0) =2a(1) =3a(2) =4a(3) =22a(4) =5a(5) =6a(6) =7a(7) =8a(8) =222a(9) =9a(10) =33a(11) =44a(12) =2222a(13) =55a(14) =333a(15) =22222a(16) =66a(17) =77a(18) =88a(19) =444a(20) =222222a(21) =99a(22) =3333a(23) =555a(24) =2222222a(25) =666a(26) =33333a(27) =4444a(28) =22222222a(29) =777