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) |
|---|---|
| 13 | 4 |
| 14 | 12 |
| 15 | 212 |
| 16 | 0 |
| 17 | 50 |
| 18 | 4525 |
| 19 | 101730 |
| 20 | 44202 |
| 21 | 66034 |
| 22 | 2408624 |
| 23 | 69362264 |
| 24 | 55488142 |
| 25 | 101343548 |
| 26 | 2398536889 |
| 27 | 43391615822 |
| 28 | 34524432316 |
| 29 | 52661182514 |
| 30 | 1231713564493 |
| 31 | 20780788492646 |
| 32 | 13267364410532 |
| 33 | 21515340977481 |
| 34 | 552407941427835 |
| 35 | 10211663162678661 |
| 36 | 7112881119092574 |
| 37 | 11873618786859165 |