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 | 1 |
| 3 | 5 |
| 4 | 5 |
| 5 | 37 |
| 6 | 47 |
| 7 | 69 |
| 8 | 263 |
| 9 | 1321 |
| 10 | 1429 |
| 11 | 9901 |
| 12 | 17249 |
| 13 | 113741 |
| 14 | 161191 |
| 15 | 32867 |
| 16 | 158363 |
| 17 | 3157279 |
| 18 | 5777183 |
| 19 | 18358381 |
| 20 | 20649997 |
| 21 | 9258477 |
| 22 | 10610101 |
| 23 | 24266365 |
| 24 | 2411391361 |
| 25 | 2299685867 |
| 26 | 1072410923 |
| 27 | 22804031069 |
| 28 | 27841579901 |
| 29 | 395718022103 |