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) |
|---|---|
| 0 | 1 |
| 1 | 37 |
| 2 | 702 |
| 3 | 9102 |
| 4 | 90686 |
| 5 | 740222 |
| 6 | 5153693 |
| 7 | 31465577 |
| 8 | 171895451 |
| 9 | 853189623 |
| 10 | 3893872009 |
| 11 | 16498746405 |
| 12 | 65414952123 |
| 13 | 244293496151 |
| 14 | 864100862802 |
| 15 | 2908662063474 |
| 16 | 9355685557836 |
| 17 | 28857543077604 |
| 18 | 85625485744207 |