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 | 35 |
| 2 | 1225 |
| 3 | 22988 |
| 4 | 272130 |
| 5 | 2335459 |
| 6 | 15925611 |
| 7 | 91494280 |
| 8 | 459681672 |
| 9 | 2071283343 |
| 10 | 8522430293 |
| 11 | 32452346859 |
| 12 | 115542470121 |
| 13 | 387735671674 |
| 14 | 1234254138386 |
| 15 | 3746228897820 |
| 16 | 10888055937498 |
| 17 | 30409729685443 |
| 18 | 81862695894551 |
| 19 | 212957974479177 |
| 20 | 536558013233411 |
| 21 | 1311963232523951 |