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 | 1880 |
| 2 | 10376 |
| 3 | 57416 |
| 4 | 317576 |
| 5 | 1756472 |
| 6 | 9714968 |
| 7 | 53733080 |
| 8 | 297195272 |
| 9 | 1643773832 |
| 10 | 9091640072 |
| 11 | 50285457464 |
| 12 | 278126631896 |
| 13 | 1538306048600 |
| 14 | 8508302434184 |
| 15 | 47059042885064 |
| 16 | 260281476168584 |
| 17 | 1439605284832568 |
| 18 | 7962392893359512 |