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 | 7 |
| 2 | 49 |
| 3 | 252 |
| 4 | 1036 |
| 5 | 3612 |
| 6 | 11088 |
| 7 | 30738 |
| 8 | 78354 |
| 9 | 186142 |
| 10 | 416394 |
| 11 | 884236 |
| 12 | 1794196 |
| 13 | 3497248 |
| 14 | 6577474 |
| 15 | 11980667 |
| 16 | 21201211 |
| 17 | 36548573 |
| 18 | 61520899 |
| 19 | 101320712 |
| 20 | 163556776 |
| 21 | 259187048 |
| 22 | 403770544 |
| 23 | 619111172 |
| 24 | 935394436 |
| 25 | 1393938716 |
| 26 | 2050706932 |