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 | 0 |
| 2 | 1 |
| 3 | 25 |
| 4 | 216 |
| 5 | 1849 |
| 6 | 36481 |
| 7 | 311904 |
| 8 | 2666689 |
| 9 | 52606009 |
| 10 | 449765784 |
| 11 | 3845364121 |
| 12 | 75857828929 |
| 13 | 648561949056 |
| 14 | 5545012396225 |
| 15 | 109386936710041 |
| 16 | 935225880773400 |
| 17 | 7995904029992761 |
| 18 | 157735886878050625 |
| 19 | 1348595071513294176 |
| 20 | 11530088066237165569 |
| 21 | 227455039491212291641 |
| 22 | 1944673157896289428824 |
| 23 | 16626378995609962758169 |
| 24 | 327990009210441246496129 |