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 | 7 |
| 2 | 87 |
| 3 | 312 |
| 4 | 1287 |
| 5 | 10572 |
| 6 | 81103 |
| 7 | 397212 |
| 8 | 881912 |
| 9 | 5270652 |
| 10 | 7601169 |
| 11 | 134021535 |
| 12 | 421518419 |
| 13 | 1402775027 |
| 14 | 4204494972 |
| 15 | 42305694389 |
| 16 | 397212509427 |
| 17 | 1943649189427 |
| 18 | 6130065071251 |
| 19 | 76024844477168 |
| 20 | 98844816642745 |
| 21 | 1333325833012312 |
| 22 | 6069248534849827 |
| 23 | 13303299356842428 |
| 24 | 191199837283345112 |
| 25 | 1084811955030810572 |