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 | 9 |
| 2 | 47 |
| 3 | 183 |
| 4 | 560 |
| 5 | 1426 |
| 6 | 3164 |
| 7 | 6322 |
| 8 | 11643 |
| 9 | 20095 |
| 10 | 32901 |
| 11 | 51569 |
| 12 | 77922 |
| 13 | 114128 |
| 14 | 162730 |
| 15 | 226676 |
| 16 | 309349 |
| 17 | 414597 |
| 18 | 546763 |
| 19 | 710715 |
| 20 | 911876 |
| 21 | 1156254 |
| 22 | 1450472 |
| 23 | 1801798 |
| 24 | 2218175 |
| 25 | 2708251 |
| 26 | 3281409 |
| 27 | 3947797 |
| 28 | 4718358 |
| 29 | 5604860 |