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 | 61 |
| 3 | 73 |
| 4 | 547 |
| 5 | 4921 |
| 6 | 703 |
| 7 | 5905 |
| 8 | 44287 |
| 9 | 6481 |
| 10 | 398581 |
| 11 | 478297 |
| 12 | 3587227 |
| 13 | 512461 |
| 14 | 58807 |
| 15 | 32285041 |
| 16 | 38742049 |
| 17 | 530713 |
| 18 | 290565367 |
| 19 | 42521761 |
| 20 | 2615088301 |
| 21 | 373584043 |
| 22 | 4780783 |
| 23 | 3138105961 |
| 24 | 23535794707 |
| 25 | 43040161 |
| 26 | 211822152361 |
| 27 | 3472494301 |