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 | 59 |
| 2 | 2416 |
| 3 | 6230 |
| 4 | 47680 |
| 5 | 120824 |
| 6 | 798976 |
| 7 | 2017760 |
| 8 | 12928000 |
| 9 | 32622464 |
| 10 | 207425536 |
| 11 | 523312640 |
| 12 | 3321118720 |
| 13 | 8378415104 |
| 14 | 53147140096 |
| 15 | 134076293120 |
| 16 | 850391203840 |
| 17 | 2145307295744 |
| 18 | 13606407110656 |
| 19 | 34325263155200 |
| 20 | 217703105167360 |
| 21 | 549205596176384 |
| 22 | 3483252048265216 |