Numbers whose base-7 representation Sum_{i=0..m} d(i)*7^i has odd d(m-i) for all odd i.

Terms

a(0) =1a(1) =2a(2) =3a(3) =4a(4) =5a(5) =6a(6) =8a(7) =10a(8) =12a(9) =15a(10) =17a(11) =19a(12) =22a(13) =24a(14) =26a(15) =29a(16) =31a(17) =33a(18) =36a(19) =38a(20) =40a(21) =43a(22) =45a(23) =47a(24) =56a(25) =57a(26) =58a(27) =59a(28) =60a(29) =61