This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 123 |
| 3 | 124 |
| 4 | 125 |
| 5 | 126 |
| 6 | 306 |
| 7 | 330 |
| 8 | 538 |
| 9 | 539 |
| 10 | 540 |
| 11 | 904 |
| 12 | 905 |
| 13 | 906 |
| 14 | 1147 |
| 15 | 1148 |
| 16 | 1149 |
| 17 | 1150 |
| 18 | 1346 |
| 19 | 1347 |
| 20 | 1348 |
| 21 | 1349 |
| 22 | 1350 |
| 23 | 1351 |
| 24 | 1352 |
| 25 | 1353 |
| 26 | 1354 |
| 27 | 1355 |
| 28 | 1356 |
| 29 | 1357 |
| 30 | 1358 |
| 31 | 1359 |
| 32 | 1360 |
| 33 | 1689 |
| 34 | 1690 |
| 35 | 1691 |
| 36 | 1692 |
| 37 | 1971 |
| 38 | 1972 |
| 39 | 2200 |
| 40 | 2201 |