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) |
|---|---|
| 0 | 15 |
| 1 | 106 |
| 2 | 121 |
| 3 | 227 |
| 4 | 1710 |
| 5 | 51527 |
| 6 | 362399 |
| 7 | 413926 |
| 8 | 776325 |
| 9 | 5848201 |
| 10 | 176222355 |
| 11 | 1239404686 |
| 12 | 1415627041 |
| 13 | 2655031727 |
| 14 | 20000849130 |
| 15 | 602680505627 |
| 16 | 4238764388519 |
| 17 | 4841444894146 |
| 18 | 9080209282665 |
| 19 | 68402909872801 |
| 20 | 2061167505466695 |
| 21 | 14496575448139666 |
| 22 | 16557742953606361 |