When expressed in base 3 and then interpreted in base 5, is a multiple of the original number.

Terms

a(0) =0a(1) =1a(2) =2a(3) =34a(4) =38a(5) =152a(6) =346a(7) =456a(8) =536a(9) =705a(10) =952a(11) =1608a(12) =2730a(13) =2856a(14) =3394a(15) =8568a(16) =13843a(17) =16642a(18) =41529a(19) =141059a(20) =228772a(21) =423177a(22) =508560a(23) =702000a(24) =1269531a(25) =5673842a(26) =13499775a(27) =20358000a(28) =27656606a(29) =33557912