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 | 6327 |
| 2 | 120133 |
| 3 | 604639 |
| 4 | 3510112 |
| 5 | 9131098 |
| 6 | 29365738 |
| 7 | 56599992 |
| 8 | 127113628 |
| 9 | 255379242 |
| 10 | 499365458 |
| 11 | 784233528 |
| 12 | 1531915046 |
| 13 | 2261261860 |
| 14 | 3473439982 |
| 15 | 5267581848 |
| 16 | 8552671195 |
| 17 | 11581885709 |
| 18 | 17881607889 |
| 19 | 23603815011 |
| 20 | 34808081571 |