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) |
|---|---|
| 1 | 57 |
| 2 | 381 |
| 3 | 993 |
| 4 | 4557 |
| 5 | 16257 |
| 6 | 32943 |
| 7 | 49953 |
| 8 | 58323 |
| 9 | 109893 |
| 10 | 135057 |
| 11 | 167691 |
| 12 | 214833 |
| 13 | 237657 |
| 14 | 453603 |
| 15 | 503391 |
| 16 | 564753 |
| 17 | 658533 |
| 18 | 678153 |
| 19 | 780573 |
| 20 | 995007 |
| 21 | 1248807 |
| 22 | 1516593 |
| 23 | 1746363 |
| 24 | 2218611 |
| 25 | 2400951 |
| 26 | 3465183 |
| 27 | 3738423 |
| 28 | 4340973 |
| 29 | 4750221 |
| 30 | 5232657 |
| 31 | 6118203 |