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 | 140 |
| 2 | 147 |
| 3 | 621 |
| 4 | 630 |
| 5 | 2184 |
| 6 | 2197 |
| 7 | 2511 |
| 8 | 2520 |
| 9 | 3230 |
| 10 | 3249 |
| 11 | 3740 |
| 12 | 3757 |
| 13 | 4180 |
| 14 | 4199 |
| 15 | 5750 |
| 16 | 5775 |
| 17 | 9975 |
| 18 | 10000 |
| 19 | 19635 |
| 20 | 19652 |
| 21 | 26600 |
| 22 | 26625 |
| 23 | 30600 |
| 24 | 30625 |
| 25 | 40040 |
| 26 | 40053 |
| 27 | 43355 |
| 28 | 43384 |
| 29 | 45900 |
| 30 | 45927 |
| 31 | 50232 |
| 32 | 50255 |
| 33 | 50600 |
| 34 | 50625 |
| 35 | 64515 |
| 36 | 64538 |
| 37 | 67320 |
| 38 | 67337 |
| 39 | 68400 |
| 40 | 68425 |