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| n | a(n) |
|---|---|
| 1 | 1000 |
| 2 | 1011 |
| 3 | 1101 |
| 4 | 1110 |
| 5 | 1112 |
| 6 | 1113 |
| 7 | 1114 |
| 8 | 1115 |
| 9 | 1116 |
| 10 | 1117 |
| 11 | 1118 |
| 12 | 1119 |
| 13 | 1121 |
| 14 | 1131 |
| 15 | 1141 |
| 16 | 1151 |
| 17 | 1161 |
| 18 | 1171 |
| 19 | 1181 |
| 20 | 1191 |
| 21 | 1211 |
| 22 | 1222 |
| 23 | 1311 |
| 24 | 1333 |
| 25 | 1411 |
| 26 | 1444 |
| 27 | 1511 |
| 28 | 1555 |
| 29 | 1611 |
| 30 | 1666 |
| 31 | 1711 |
| 32 | 1777 |
| 33 | 1811 |
| 34 | 1888 |
| 35 | 1911 |
| 36 | 1999 |
| 37 | 2000 |
| 38 | 2022 |
| 39 | 2111 |
| 40 | 2122 |
| 41 | 2202 |
| 42 | 2212 |
| 43 | 2220 |
| 44 | 2221 |
| 45 | 2223 |
| 46 | 2224 |
| 47 | 2225 |
| 48 | 2226 |
| 49 | 2227 |
| 50 | 2228 |
| 51 | 2229 |
| 52 | 2232 |
| 53 | 2242 |
| 54 | 2252 |
| 55 | 2262 |
| 56 | 2272 |
| 57 | 2282 |
| 58 | 2292 |
| 59 | 2322 |
| 60 | 2333 |
| 61 | 2422 |
| 62 | 2444 |
[1000,1011,1101,1110,1112,1113,1114,1115,1116, 1117,1118,1119,1121,1131,1141,1151,1161,1171,1181, 1191,1211,1222,1311,1333,1411,1444,1511,1555,1611, 1666,1711,1777,1811,1888,1911,1999,2000,2022,2111, 2122,2202,2212,2220,2221,2223,2224,2225,2226,2227, 2228,2229,2232,2242,2252,2262,2272,2282,2292,2322, 2333,2422,2444] |