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 | 2 |
| 2 | 3 |
| 3 | 5 |
| 4 | 11 |
| 5 | 32 |
| 6 | 102 |
| 7 | 434 |
| 8 | 2023 |
| 9 | 10199 |
| 10 | 65311 |
| 11 | 442770 |
| 12 | 3070230 |
| 13 | 25854959 |
| 14 | 228298330 |
| 15 | 2055942579 |
| 16 | 21084272583 |
| 17 | 227382284940 |
| 18 | 2519387997046 |
| 19 | 30637175292504 |
| 20 | 388603681352779 |
| 21 | 5089264753092413 |
| 22 | 71586205133709591 |
| 23 | 1046039325522659075 |
| 24 | 15772283298257716676 |
| 25 | 251718984356104074853 |