Numbers k such that k, 2*k, 4*k and 8*k are balanced numbers (A020492).

Terms

a(0) =105a(1) =1485a(2) =3135a(3) =35343a(4) =39105a(5) =71145a(6) =74613a(7) =87087a(8) =124605a(9) =150195a(10) =175305a(11) =192855a(12) =263055a(13) =413655a(14) =421005a(15) =697851a(16) =930699a(17) =1404765a(18) =1873485a(19) =2471931a(20) =2576115a(21) =2965599a(22) =3281265a(23) =3398625a(24) =3937635a(25) =4172259a(26) =4532625a(27) =4589949a(28) =4975965a(29) =5218521