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 | 31 |
| 3 | 2050 |
| 4 | 13248 |
| 5 | 94647 |
| 6 | 3015179 |
| 7 | 67372651 |
| 8 | 916902295 |
| 9 | 14467301940 |
| 10 | 290169660945 |
| 11 | 5329084696567 |
| 12 | 89381913856892 |
| 13 | 1564002749882255 |
| 14 | 28438920688062707 |
| 15 | 506516973635082252 |
| 16 | 8886666042271930829 |