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 | 16 |
| 2 | 1 |
| 3 | 16 |
| 4 | 10 |
| 5 | 12 |
| 6 | 92 |
| 7 | 320 |
| 8 | 1588 |
| 9 | 7234 |
| 10 | 34477 |
| 11 | 171770 |
| 12 | 861562 |
| 13 | 4318341 |
| 14 | 21575848 |
| 15 | 107657594 |
| 16 | 537357962 |
| 17 | 2682516710 |
| 18 | 13395048430 |
| 19 | 66897233633 |
| 20 | 334110946467 |
| 21 | 1668703731020 |
| 22 | 8334274683849 |
| 23 | 41625156594335 |
| 24 | 207894886362394 |