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) |
|---|---|
| 10 | 1 |
| 11 | 4 |
| 12 | 20 |
| 13 | 83 |
| 14 | 318 |
| 15 | 1095 |
| 16 | 3495 |
| 17 | 10292 |
| 18 | 28389 |
| 19 | 73586 |
| 20 | 180663 |
| 21 | 421949 |
| 22 | 942537 |
| 23 | 2021060 |
| 24 | 4176507 |
| 25 | 8342823 |
| 26 | 16157071 |
| 27 | 30410396 |
| 28 | 55755744 |
| 29 | 99773709 |
| 30 | 174579270 |
| 31 | 299163528 |
| 32 | 502804996 |
| 33 | 829905792 |
| 34 | 1346834873 |
| 35 | 2151396469 |