When expressed in base 2 and then interpreted in base 7, is a multiple of the original number.

Terms

a(0) =0a(1) =1a(2) =5a(3) =10a(4) =65a(5) =125a(6) =130a(7) =250a(8) =325a(9) =350a(10) =462a(11) =650a(12) =798a(13) =910a(14) =923a(15) =924a(16) =966a(17) =1171a(18) =1300a(19) =1596a(20) =1625a(21) =1848a(22) =1932a(23) =2353a(24) =2730a(25) =3192a(26) =3250a(27) =3864a(28) =4523a(29) =4550