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 | 2276 |
| 3 | 57992 |
| 4 | 631638 |
| 5 | 3687480 |
| 6 | 15586972 |
| 7 | 50917674 |
| 8 | 141509152 |
| 9 | 344941886 |
| 10 | 762917274 |
| 11 | 1552478008 |
| 12 | 2969607490 |
| 13 | 5365606152 |
| 14 | 9271467482 |
| 15 | 15395275250 |