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 | 3 |
| 2 | 5 |
| 3 | 10 |
| 4 | 27 |
| 5 | 87 |
| 6 | 322 |
| 7 | 1335 |
| 8 | 6097 |
| 9 | 30304 |
| 10 | 162409 |
| 11 | 931667 |
| 12 | 5686712 |
| 13 | 36750201 |
| 14 | 250401793 |
| 15 | 1792401626 |
| 16 | 13436958559 |
| 17 | 105208112643 |
| 18 | 858286687914 |
| 19 | 7279760687179 |
| 20 | 64071719451645 |
| 21 | 584150874832552 |
| 22 | 5508179528996197 |