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 | 6 |
| 2 | 217 |
| 3 | 13997 |
| 4 | 1283817 |
| 5 | 151778430 |
| 6 | 21902350480 |
| 7 | 3726598826676 |
| 8 | 729894290301789 |
| 9 | 161683308639785288 |
| 10 | 39960246577221138239 |
| 11 | 10900687898284398341055 |
| 12 | 3253179971490906621196740 |
| 13 | 1054372896576358319473872858 |
| 14 | 368810384314446516250937494104 |