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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 20 |
| 3 | 21 |
| 4 | 400 |
| 5 | 401 |
| 6 | 420 |
| 7 | 421 |
| 8 | 8000 |
| 9 | 8001 |
| 10 | 8020 |
| 11 | 8021 |
| 12 | 8400 |
| 13 | 8401 |
| 14 | 8420 |
| 15 | 8421 |
| 16 | 160000 |
| 17 | 160001 |
| 18 | 160020 |
| 19 | 160021 |
| 20 | 160400 |
| 21 | 160401 |
| 22 | 160420 |
| 23 | 160421 |
| 24 | 168000 |
| 25 | 168001 |
| 26 | 168020 |
| 27 | 168021 |
| 28 | 168400 |
| 29 | 168401 |
| 30 | 168420 |
| 31 | 168421 |
| 32 | 3200000 |
| 33 | 3200001 |
| 34 | 3200020 |
| 35 | 3200021 |
| 36 | 3200400 |
| 37 | 3200401 |
| 38 | 3200420 |
| 39 | 3200421 |
| 40 | 3208000 |
| 41 | 3208001 |
| 42 | 3208020 |
| 43 | 3208021 |
| 44 | 3208400 |
| 45 | 3208401 |
| 46 | 3208420 |
| 47 | 3208421 |
| 48 | 32160000 |
[0,1,20,21,400,401,420,421,8000,8001,8020,8021, 8400,8401,8420,8421,160000,160001,160020,160021, 160400,160401,160420,160421,168000,168001,168020, 168021,168400,168401,168420,168421,3200000, 3200001,3200020,3200021,3200400,3200401,3200420, 3200421,3208000,3208001,3208020,3208021,3208400, 3208401,3208420,3208421,32160000] |