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 | 1023 |
| 1 | 31775 |
| 2 | 232551 |
| 3 | 824491 |
| 4 | 1386837 |
| 5 | 6330581 |
| 6 | 25206065 |
| 7 | 42278310 |
| 8 | 77607100 |
| 9 | 402698573 |
| 10 | 673253467 |
| 11 | 1218520349 |
| 12 | 6442523019 |
| 13 | 10748180761 |
| 14 | 51539687634 |
| 15 | 86033873250 |
| 16 | 156768744521 |
| 17 | 824634027372 |
| 18 | 1374532244735 |
| 19 | 2476057332766 |