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 | 7 |
| 3 | 1 |
| 4 | 163 |
| 5 | 52 |
| 6 | 1 |
| 7 | 8873 |
| 8 | 4719 |
| 9 | 231 |
| 10 | 1 |
| 11 | 930581 |
| 12 | 731646 |
| 13 | 64966 |
| 14 | 806 |
| 15 | 1 |
| 16 | 166430695 |
| 17 | 180969681 |
| 18 | 25235006 |
| 19 | 610166 |
| 20 | 2451 |
| 21 | 1 |
| 22 | 46667364787 |
| 23 | 67248150516 |
| 24 | 13560308427 |
| 25 | 543687292 |
| 26 | 4546137 |
| 27 | 6840 |
| 28 | 1 |
| 29 | 19297882224241 |
| 30 | 35761409868799 |
| 31 | 9882496297869 |