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 | 14 |
| 2 | 196 |
| 3 | 882 |
| 4 | 3893 |
| 5 | 14446 |
| 6 | 55576 |
| 7 | 222487 |
| 8 | 873641 |
| 9 | 3397748 |
| 10 | 13352522 |
| 11 | 52449423 |
| 12 | 205347969 |
| 13 | 804974692 |
| 14 | 3157691203 |
| 15 | 12378682019 |
| 16 | 48526203780 |
| 17 | 190271720018 |
| 18 | 746002420845 |
| 19 | 2924723857799 |
| 20 | 11466940285385 |
| 21 | 44958442042385 |