Numbers k such that k and 2*k, taken together are pandigital.

Terms

a(0) =13485a(1) =13548a(2) =13845a(3) =14538a(4) =14685a(5) =14835a(6) =14853a(7) =14865a(8) =15486a(9) =16485a(10) =18546a(11) =18645a(12) =20679a(13) =20769a(14) =20793a(15) =23079a(16) =26709a(17) =26907a(18) =27069a(19) =27093a(20) =27309a(21) =29067a(22) =29073a(23) =29307a(24) =30729a(25) =30792a(26) =30927a(27) =31485a(28) =32079a(29) =32709