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 | 66 |
| 3 | 423 |
| 4 | 9768 |
| 5 | 251025 |
| 6 | 1253142 |
| 7 | 7123907 |
| 8 | 169108896 |
| 9 | 903996009 |
| 10 | 10004500100 |
| 11 | 110067122011 |
| 12 | 2520202950144 |
| 13 | 13001275950013 |
| 14 | 280009919140028 |
| 15 | 7500003630000075 |
| 16 | 33760012606001792 |
| 17 | 170000242046000017 |