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 | 133496 |
| 1 | 1468457 |
| 2 | 17487988 |
| 3 | 224406930 |
| 4 | 3089233056 |
| 5 | 45440868120 |
| 6 | 711607724640 |
| 7 | 11824686110160 |
| 8 | 207863095910400 |
| 9 | 3854801333416320 |
| 10 | 75225258805132800 |
| 11 | 1541182421573625600 |
| 12 | 33078535427763302400 |
| 13 | 742312125779672448000 |
| 14 | 17385470058151215820800 |
| 15 | 424244381692864981248000 |