Positive numbers having the same set of digits in base 4 and base 7.

Terms

a(0) =1a(1) =2a(2) =3a(3) =9a(4) =52a(5) =106a(6) =352a(7) =394a(8) =415a(9) =444a(10) =462a(11) =492a(12) =497a(13) =504a(14) =505a(15) =506a(16) =507a(17) =707a(18) =708a(19) =745a(20) =756a(21) =757a(22) =758a(23) =759a(24) =834a(25) =840a(26) =1036a(27) =1037a(28) =1038a(29) =1039