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 | 72 |
| 2 | 4128 |
| 3 | 8 |
| 4 | 262272 |
| 5 | 1000200 |
| 6 | 44 |
| 7 | 7529928 |
| 8 | 16777728 |
| 9 | 34012872 |
| 10 | 64000800 |
| 11 | 113380872 |
| 12 | 191104128 |
| 13 | 308917128 |
| 14 | 12 |
| 15 | 729001800 |
| 16 | 4 |
| 17 | 1544806728 |
| 18 | 32 |
| 19 | 3010939272 |
| 20 | 4096003200 |
| 21 | 8 |
| 22 | 7256317728 |
| 23 | 9474301128 |
| 24 | 80 |
| 25 | 15625005000 |
| 26 | 19770615072 |
| 27 | 24794917128 |
| 28 | 30840985728 |
| 29 | 38068699272 |