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 | 1 |
| 2 | 13 |
| 3 | 163 |
| 4 | 373 |
| 5 | 2191 |
| 6 | 3433 |
| 7 | 7411 |
| 8 | 10363 |
| 9 | 24583 |
| 10 | 31591 |
| 11 | 49981 |
| 12 | 61723 |
| 13 | 109513 |
| 14 | 130351 |
| 15 | 180793 |
| 16 | 210901 |
| 17 | 324013 |
| 18 | 370273 |
| 19 | 477463 |
| 20 | 539041 |
| 21 | 759811 |
| 22 | 846613 |
| 23 | 1042303 |
| 24 | 1151983 |
| 25 | 1533331 |
| 26 | 1679323 |
| 27 | 2002321 |
| 28 | 2180263 |
| 29 | 2785693 |
| 30 | 3013051 |
| 31 | 3509221 |