When expressed in base 3 and then interpreted in base 8, is a multiple of the original number.

Terms

a(0) =0a(1) =1a(2) =2a(3) =5a(4) =11a(5) =12a(6) =23a(7) =24a(8) =33a(9) =36a(10) =50a(11) =69a(12) =72a(13) =120a(14) =132a(15) =144a(16) =240a(17) =288a(18) =360a(19) =396a(20) =432a(21) =576a(22) =720a(23) =931a(24) =1188a(25) =1296a(26) =1394a(27) =1440a(28) =2210a(29) =2753