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 | 21 |
| 2 | 64 |
| 3 | 11 |
| 4 | 161 |
| 5 | 546 |
| 6 | 804 |
| 7 | 6326 |
| 8 | 19745 |
| 9 | 39495 |
| 10 | 290364 |
| 11 | 855008 |
| 12 | 2191987 |
| 13 | 14241405 |
| 14 | 41451856 |
| 15 | 129702347 |
| 16 | 739374632 |
| 17 | 2206681686 |
| 18 | 7939800765 |
| 19 | 40476006538 |
| 20 | 126433675843 |
| 21 | 496773451920 |
| 22 | 2321391370041 |
| 23 | 7652725646418 |
| 24 | 31537376314083 |