Numbers with multiplicative digital root value 7.

Terms

a(0) =7a(1) =17a(2) =71a(3) =117a(4) =171a(5) =711a(6) =1117a(7) =1171a(8) =1711a(9) =7111a(10) =11117a(11) =11171a(12) =11711a(13) =17111a(14) =71111a(15) =111117a(16) =111171a(17) =111711a(18) =117111a(19) =171111a(20) =711111a(21) =1111117a(22) =1111171a(23) =1111711a(24) =1117111a(25) =1171111a(26) =1711111a(27) =7111111a(28) =11111117a(29) =11111171