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) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 2 |
| 3 | 11 |
| 4 | 35 |
| 5 | 116 |
| 6 | 267 |
| 7 | 383 |
| 8 | 8310 |
| 9 | 8693 |
| 10 | 17003 |
| 11 | 25696 |
| 12 | 119787 |
| 13 | 265270 |
| 14 | 385057 |
| 15 | 18748006 |
| 16 | 1331493483 |
| 17 | 9339202387 |
| 18 | 10670695870 |
| 19 | 20009898257 |
| 20 | 190759780183 |
| 21 | 210769678440 |
| 22 | 612299137063 |
| 23 | 823068815503 |
| 24 | 9666056107596 |
| 25 | 10489124923099 |