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 | 3 |
| 2 | 8 |
| 3 | 23 |
| 4 | 55 |
| 5 | 129 |
| 6 | 291 |
| 7 | 627 |
| 8 | 1317 |
| 9 | 2697 |
| 10 | 5398 |
| 11 | 10589 |
| 12 | 20421 |
| 13 | 38743 |
| 14 | 72452 |
| 15 | 133724 |
| 16 | 243792 |
| 17 | 439496 |
| 18 | 784070 |
| 19 | 1385195 |
| 20 | 2424971 |
| 21 | 4209094 |
| 22 | 7247141 |
| 23 | 12383496 |
| 24 | 21008559 |
| 25 | 35398548 |
| 26 | 59259781 |
| 27 | 98595110 |
| 28 | 163077878 |
| 29 | 268221706 |
| 30 | 438791204 |
| 31 | 714142139 |
| 32 | 1156552537 |