Numbers whose base-5 representation contains exactly three 1's and three 2's.

Terms

a(0) =3937a(1) =4037a(2) =4057a(3) =4061a(4) =4537a(5) =4557a(6) =4561a(7) =4657a(8) =4661a(9) =4681a(10) =7037a(11) =7057a(12) =7061a(13) =7157a(14) =7161a(15) =7181a(16) =7657a(17) =7661a(18) =7681a(19) =7781a(20) =16437a(21) =16537a(22) =16557a(23) =16561a(24) =17037a(25) =17057a(26) =17061a(27) =17157a(28) =17161a(29) =17181