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 | 2 |
| 2 | 10 |
| 3 | 74 |
| 4 | 782 |
| 5 | 10562 |
| 6 | 175826 |
| 7 | 3457742 |
| 8 | 78408332 |
| 9 | 2005691690 |
| 10 | 56970282514 |
| 11 | 1772967273794 |
| 12 | 59814500606018 |
| 13 | 2168062920325850 |
| 14 | 83802728579860658 |
| 15 | 3432438439271783026 |
| 16 | 148165335791410936770 |
| 17 | 6708873999658599592672 |