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 | 3 |
| 2 | 25 |
| 3 | 91 |
| 4 | 2101 |
| 5 | 23101 |
| 6 | 60061 |
| 7 | 510511 |
| 8 | 29099071 |
| 9 | 3792578791 |
| 10 | 84106011991 |
| 11 | 2005604901301 |
| 12 | 252305096583541 |
| 13 | 11561510014033981 |
| 14 | 52331045326680121 |
| 15 | 31359378912013061911 |
| 16 | 1792403716245452460151 |
| 17 | 98060777857864844592571 |