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 | 3 |
| 3 | 9 |
| 4 | 57 |
| 5 | 171 |
| 6 | 32547 |
| 7 | 97641 |
| 8 | 784899 |
| 9 | 9961491 |
| 10 | 14913081 |
| 11 | 24738057 |
| 12 | 29884473 |
| 13 | 250537059 |
| 14 | 297381939 |
| 15 | 892145817 |
| 16 | 1338104811 |
| 17 | 4014314433 |
| 18 | 5688011361 |
| 19 | 8515369251 |
| 20 | 8920514307 |
| 21 | 9146532873 |
| 22 | 14125430547 |
| 23 | 17064034083 |
| 24 | 26761542921 |
| 25 | 27439598619 |
| 26 | 143056660689 |
| 27 | 243640690617 |
| 28 | 730922071851 |
| 29 | 2157430689027 |
| 30 | 2606254774803 |
| 31 | 4323297055491 |
| 32 | 5222670270483 |