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) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 3 |
| 4 | 12 |
| 5 | 5 |
| 6 | 60 |
| 7 | 210 |
| 8 | 840 |
| 9 | 63 |
| 10 | 2520 |
| 11 | 770 |
| 12 | 5544 |
| 13 | 25740 |
| 14 | 40040 |
| 15 | 90090 |
| 16 | 720720 |
| 17 | 510510 |
| 18 | 12252240 |
| 19 | 58198140 |
| 20 | 232792560 |
| 21 | 5290740 |
| 22 | 3695120 |
| 23 | 148728580 |
| 24 | 5354228880 |
| 25 | 147094200 |
| 26 | 26771144400 |
| 27 | 5019589575 |
| 28 | 80313433200 |
| 29 | 2587877292 |
| 30 | 2329089562800 |
| 31 | 36100888223400 |
| 32 | 3702655202400 |