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 | 9 |
| 3 | 17 |
| 4 | 29 |
| 5 | 77 |
| 6 | 197 |
| 7 | 689 |
| 8 | 44537 |
| 9 | 159617 |
| 10 | 374249 |
| 11 | 695957 |
| 12 | 4343237 |
| 13 | 8439595349 |
| 14 | 196119836669 |
| 15 | 45036059849537 |
| 16 | 108841069412237 |
| 17 | 505069584287297 |