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 | 12 |
| 2 | 494 |
| 3 | 6838 |
| 4 | 131044 |
| 5 | 2525244 |
| 6 | 46187510 |
| 7 | 864944851 |
| 8 | 16149058068 |
| 9 | 300870617401 |
| 10 | 5613564284292 |
| 11 | 104698838837111 |
| 12 | 1952650753998364 |
| 13 | 36420081863348278 |
| 14 | 679272850629109385 |
| 15 | 12669181880403565080 |
| 16 | 236294959020596014510 |