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 | 1 |
| 1 | 1 |
| 2 | 1 |
| 3 | 5 |
| 4 | 7 |
| 5 | 37 |
| 6 | 79 |
| 7 | 173 |
| 8 | 101 |
| 9 | 127 |
| 10 | 1033 |
| 11 | 1571 |
| 12 | 200069 |
| 13 | 2564519 |
| 14 | 5126711 |
| 15 | 25661369 |
| 16 | 532393 |
| 17 | 431100529 |
| 18 | 1855391 |
| 19 | 1533985991 |
| 20 | 48977868113 |
| 21 | 342880481117 |
| 22 | 342289639579 |
| 23 | 435979161889 |
| 24 | 1308720597671 |
| 25 | 373092965489 |
| 26 | 7824703695283 |
| 27 | 24141028973 |
| 28 | 31250466692609 |