When expressed in base 4 and then interpreted in base 6, is a multiple of the original number.

Terms

a(0) =0a(1) =1a(2) =2a(3) =3a(4) =22a(5) =24a(6) =46a(7) =79a(8) =87a(9) =88a(10) =96a(11) =175a(12) =183a(13) =184a(14) =521a(15) =785a(16) =2485a(17) =2605a(18) =3925a(19) =8664a(20) =8722a(21) =48231a(22) =114635a(23) =204483a(24) =556826a(25) =2129443a(26) =8597088a(27) =18353039a(28) =24710239a(29) =32175566