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 | 3 |
| 2 | 29 |
| 3 | 1553 |
| 4 | 4679 |
| 5 | 16103 |
| 6 | 22619 |
| 7 | 111149 |
| 8 | 837929 |
| 9 | 1082399 |
| 10 | 2374319 |
| 11 | 2896403 |
| 12 | 3835259 |
| 13 | 6377549 |
| 14 | 16007039 |
| 15 | 18129539 |
| 16 | 23000459 |
| 17 | 27252359 |
| 18 | 30397349 |
| 19 | 32068199 |
| 20 | 37495769 |
| 21 | 55344353 |
| 22 | 75618299 |
| 23 | 118121639 |
| 24 | 132316199 |
| 25 | 147753209 |
| 26 | 230762759 |
| 27 | 254063753 |
| 28 | 386923739 |