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 | 33 |
| 2 | 242 |
| 3 | 1068 |
| 4 | 1353 |
| 5 | 27216 |
| 6 | 109193 |
| 7 | 15541 |
| 8 | 133140 |
| 9 | 495081 |
| 10 | 1115402 |
| 11 | 2754849 |
| 12 | 1353359 |
| 13 | 649828 |
| 14 | 3228564 |
| 15 | 2359835 |
| 16 | 4694824 |
| 17 | 7044514 |
| 18 | 28538377 |
| 19 | 1111415 |
| 20 | 77588426 |
| 21 | 16178110 |
| 22 | 2553319 |
| 23 | 9571390 |
| 24 | 158485540 |
| 25 | 18664438 |
| 26 | 146773512 |
| 27 | 45639527 |
| 28 | 448251412 |
| 29 | 48834112 |
| 30 | 141076650 |