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 | 57 |
| 3 | 319 |
| 4 | 1065 |
| 5 | 2691 |
| 6 | 5713 |
| 7 | 10767 |
| 8 | 18609 |
| 9 | 30115 |
| 10 | 46281 |
| 11 | 68223 |
| 12 | 97177 |
| 13 | 134499 |
| 14 | 181665 |
| 15 | 240271 |
| 16 | 312033 |
| 17 | 398787 |
| 18 | 502489 |
| 19 | 625215 |
| 20 | 769161 |
| 21 | 936643 |
| 22 | 1130097 |
| 23 | 1352079 |
| 24 | 1605265 |
| 25 | 1892451 |
| 26 | 2216553 |
| 27 | 2580607 |
| 28 | 2987769 |
| 29 | 3441315 |