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 | 4 |
| 2 | 14 |
| 3 | 114 |
| 4 | 164 |
| 5 | 763 |
| 6 | 3543 |
| 7 | 17066 |
| 8 | 13464 |
| 9 | 163974 |
| 10 | 757364 |
| 11 | 3421244 |
| 12 | 6727219 |
| 13 | 28902604 |
| 14 | 35685649 |
| 15 | 761777604 |
| 16 | 1350780517 |
| 17 | 2543012249 |
| 18 | 7633715304 |
| 19 | 101476238101 |
| 20 | 163186746514 |
| 21 | 353823251814 |
| 22 | 5708006133707 |