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 | 6 |
| 3 | 84 |
| 4 | 210 |
| 5 | 490 |
| 6 | 525 |
| 7 | 2184 |
| 8 | 2340 |
| 9 | 5460 |
| 10 | 9464 |
| 11 | 12012 |
| 12 | 12740 |
| 13 | 12870 |
| 14 | 13650 |
| 15 | 14625 |
| 16 | 19152 |
| 17 | 22308 |
| 18 | 30030 |
| 19 | 34125 |
| 20 | 43940 |
| 21 | 45144 |
| 22 | 55770 |
| 23 | 59150 |
| 24 | 66066 |
| 25 | 70070 |
| 26 | 70785 |
| 27 | 75075 |
| 28 | 79625 |
| 29 | 82992 |
| 30 | 88920 |