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 | 121 |
| 3 | 1331 |
| 4 | 14641 |
| 5 | 161051 |
| 6 | 1771561 |
| 7 | 19487171 |
| 8 | 214358881 |
| 9 | 2357947691 |
| 10 | 25937424601 |
| 11 | 0 |
| 12 | 166394893969 |
| 13 | 471664657228 |
| 14 | 3140272804489 |
| 15 | 8065845196901 |
| 16 | 16532101601985 |
| 17 | 5101754322287 |
| 18 | 57157537871161 |
| 19 | 73663224996225 |
| 20 | 17332560009201 |
| 21 | 240252754633991 |
| 22 | 96720656337129 |
| 23 | 29113945750083 |