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 | 344 |
| 2 | 2120 |
| 3 | 13064 |
| 4 | 80504 |
| 5 | 496088 |
| 6 | 3057032 |
| 7 | 18838280 |
| 8 | 116086712 |
| 9 | 715358552 |
| 10 | 4408238024 |
| 11 | 27164786696 |
| 12 | 167396958200 |
| 13 | 1031546535896 |
| 14 | 6356676173576 |
| 15 | 39171603577352 |
| 16 | 241386297637688 |
| 17 | 1487489389403480 |
| 18 | 9166322634058568 |