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 | 2 |
| 3 | 9 |
| 4 | 19 |
| 5 | 29 |
| 6 | 44 |
| 7 | 632 |
| 8 | 11829 |
| 9 | 19262 |
| 10 | 25286 |
| 11 | 26606 |
| 12 | 29824 |
| 13 | 247273 |
| 14 | 310556 |
| 15 | 491240 |
| 16 | 1419166 |
| 17 | 1601984 |
| 18 | 9509238 |
| 19 | 113333959 |
| 20 | 220531559 |
| 21 | 1034662494 |
| 22 | 8323088842 |
| 23 | 13102043650 |
| 24 | 14053673678 |
| 25 | 23505911647 |