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 | 5 |
| 2 | 64 |
| 3 | 506 |
| 4 | 64325 |
| 5 | 268723 |
| 6 | 480129 |
| 7 | 6282620 |
| 8 | 64548862 |
| 9 | 9657523883 |
| 10 | 13480852825 |
| 11 | 29766135708 |
| 12 | 105223301080 |
| 13 | 519861666225 |
| 14 | 851245744041 |
| 15 | 1378216791896 |
| 16 | 581522966976875 |
| 17 | 583298551668358 |
| 18 | 885441628670251 |
| 19 | 1651966084813205 |
| 20 | 16868988672306046 |
| 21 | 17170433482837259 |