Numbers whose base-10 representation has exactly 7 runs.

Terms

a(0) =1010101a(1) =1010102a(2) =1010103a(3) =1010104a(4) =1010105a(5) =1010106a(6) =1010107a(7) =1010108a(8) =1010109a(9) =1010120a(10) =1010121a(11) =1010123a(12) =1010124a(13) =1010125a(14) =1010126a(15) =1010127a(16) =1010128a(17) =1010129a(18) =1010130a(19) =1010131a(20) =1010132a(21) =1010134a(22) =1010135a(23) =1010136