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 | 43 |
| 3 | 334 |
| 4 | 1406 |
| 5 | 4271 |
| 6 | 10577 |
| 7 | 22764 |
| 8 | 44220 |
| 9 | 79437 |
| 10 | 134167 |
| 11 | 215578 |
| 12 | 332410 |
| 13 | 495131 |
| 14 | 716093 |
| 15 | 1009688 |
| 16 | 1392504 |
| 17 | 1883481 |
| 18 | 2504067 |
| 19 | 3278374 |
| 20 | 4233334 |
| 21 | 5398855 |
| 22 | 6807977 |
| 23 | 8497028 |
| 24 | 10505780 |
| 25 | 12877605 |
| 26 | 15659631 |
| 27 | 18902898 |
| 28 | 22662514 |