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 | 2 |
| 2 | 7 |
| 3 | 24 |
| 4 | 58 |
| 5 | 315 |
| 6 | 381 |
| 7 | 2968 |
| 8 | 6756 |
| 9 | 22725 |
| 10 | 25255 |
| 11 | 304986 |
| 12 | 332718 |
| 13 | 4684771 |
| 14 | 5045145 |
| 15 | 5405520 |
| 16 | 11531656 |
| 17 | 208288233 |
| 18 | 220540491 |
| 19 | 4423058830 |
| 20 | 4655851410 |
| 21 | 4888643991 |
| 22 | 5121436573 |
| 23 | 123147264516 |
| 24 | 128501493420 |
| 25 | 669278610325 |
| 26 | 696049754751 |