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 | 10 |
| 1 | 135 |
| 2 | 1844 |
| 3 | 25145 |
| 4 | 342846 |
| 5 | 4674655 |
| 6 | 63738280 |
| 7 | 869062689 |
| 8 | 11849550290 |
| 9 | 161566989191 |
| 10 | 2202943686300 |
| 11 | 30036834314425 |
| 12 | 409548106582534 |
| 13 | 5584132130887935 |
| 14 | 76138873929651536 |
| 15 | 1038143078887634945 |
| 16 | 14154938162574828570 |
| 17 | 193000635905606023879 |
| 18 | 2631537137933532600580 |