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) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 85 |
| 3 | 1408 |
| 4 | 11440 |
| 5 | 61490 |
| 6 | 251498 |
| 7 | 846260 |
| 8 | 2458676 |
| 9 | 6369275 |
| 10 | 15047175 |
| 11 | 32955780 |
| 12 | 67746900 |
| 13 | 131969604 |
| 14 | 245444980 |
| 15 | 438485080 |
| 16 | 756163672 |
| 17 | 1263878005 |
| 18 | 2054474617 |
| 19 | 3257248280 |
| 20 | 5049161480 |
| 21 | 7668672374 |
| 22 | 11432601950 |
| 23 | 16756516140 |
| 24 | 24179145900 |
| 25 | 34391417775 |