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 | 128 |
| 2 | 4246 |
| 3 | 85310 |
| 4 | 1315666 |
| 5 | 17234438 |
| 6 | 202229266 |
| 7 | 2193664790 |
| 8 | 22447207906 |
| 9 | 219680806598 |
| 10 | 2076319823986 |
| 11 | 19088476874870 |
| 12 | 171615294959746 |
| 13 | 1515094215592358 |
| 14 | 13177154171845906 |
| 15 | 113190802751806550 |
| 16 | 962272631860465186 |
| 17 | 8109687887324611718 |
| 18 | 67845242760941615026 |