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 | 1952 |
| 2 | 80354 |
| 3 | 2363528 |
| 4 | 24619804 |
| 5 | 181549572 |
| 6 | 985612414 |
| 7 | 4386401650 |
| 8 | 16181960396 |
| 9 | 52677240496 |
| 10 | 151529682640 |
| 11 | 402510784944 |
| 12 | 980816185390 |
| 13 | 2256668468018 |
| 14 | 4888182757724 |
| 15 | 10136422535096 |