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 | 51 |
| 2 | 501 |
| 3 | 2471 |
| 4 | 8361 |
| 5 | 22363 |
| 6 | 50973 |
| 7 | 103503 |
| 8 | 192593 |
| 9 | 334723 |
| 10 | 550725 |
| 11 | 866295 |
| 12 | 1312505 |
| 13 | 1926315 |
| 14 | 2751085 |
| 15 | 3837087 |
| 16 | 5242017 |
| 17 | 7031507 |
| 18 | 9279637 |
| 19 | 12069447 |
| 20 | 15493449 |
| 21 | 19654139 |
| 22 | 24664509 |
| 23 | 30648559 |
| 24 | 37741809 |
| 25 | 46091811 |
| 26 | 55858661 |
| 27 | 67215511 |
| 28 | 80349081 |