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 | 63 |
| 2 | 2394 |
| 3 | 71442 |
| 4 | 1848987 |
| 5 | 43615341 |
| 6 | 964942308 |
| 7 | 20385709344 |
| 8 | 416206043253 |
| 9 | 8280505692459 |
| 10 | 161494678323342 |
| 11 | 3101091077181006 |
| 12 | 58823743379417199 |
| 13 | 1104995938593100617 |
| 14 | 20595841868175915096 |