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 | 3 |
| 3 | 4 |
| 4 | 13 |
| 5 | 6 |
| 6 | 66 |
| 7 | 8 |
| 8 | 201 |
| 9 | 253 |
| 10 | 648 |
| 11 | 12 |
| 12 | 5488 |
| 13 | 14 |
| 14 | 8550 |
| 15 | 22824 |
| 16 | 49681 |
| 17 | 18 |
| 18 | 316743 |
| 19 | 20 |
| 20 | 865578 |
| 21 | 1611152 |
| 22 | 2098506 |
| 23 | 24 |
| 24 | 27246276 |
| 25 | 1953151 |
| 26 | 33556656 |
| 27 | 129199240 |
| 28 | 202152908 |
| 29 | 30 |
| 30 | 1758141606 |
| 31 | 32 |
| 32 | 3223326753 |
| 33 | 10460514288 |
| 34 | 8589939540 |
| 35 | 1261056768 |
| 36 | 146050621105 |
| 37 | 38 |