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 | 3 |
| 3 | 28 |
| 4 | 59 |
| 5 | 146 |
| 6 | 643 |
| 7 | 4004 |
| 8 | 8651 |
| 9 | 12655 |
| 10 | 21306 |
| 11 | 76573 |
| 12 | 97879 |
| 13 | 1838395 |
| 14 | 1936274 |
| 15 | 13456039 |
| 16 | 15392313 |
| 17 | 44240665 |
| 18 | 59632978 |
| 19 | 103873643 |
| 20 | 475127550 |
| 21 | 579001193 |
| 22 | 24793177656 |
| 23 | 149338067129 |
| 24 | 174131244785 |
| 25 | 845863046269 |
| 26 | 1865857337323 |