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 | 5 |
| 1 | 13 |
| 2 | 41 |
| 3 | 113 |
| 4 | 109 |
| 5 | 2113 |
| 6 | 1613 |
| 7 | 1321 |
| 8 | 26317 |
| 9 | 525313 |
| 10 | 14449 |
| 11 | 30269 |
| 12 | 268501 |
| 13 | 279073 |
| 14 | 536903681 |
| 15 | 384773 |
| 16 | 4327489 |
| 17 | 47392381 |
| 18 | 231769777 |
| 19 | 21841 |
| 20 | 43249589 |
| 21 | 1759217765581 |
| 22 | 29247661 |
| 23 | 140737471578113 |
| 24 | 4981857697937 |
| 25 | 1326700741 |
| 26 | 1801439824104653 |
| 27 | 3630105520141 |