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 | 24 |
| 3 | 1400 |
| 4 | 7620 |
| 5 | 20952 |
| 6 | 41652 |
| 7 | 69456 |
| 8 | 104268 |
| 9 | 146088 |
| 10 | 194916 |
| 11 | 250752 |
| 12 | 313596 |
| 13 | 383448 |
| 14 | 460308 |
| 15 | 544176 |
| 16 | 635052 |
| 17 | 732936 |
| 18 | 837828 |
| 19 | 949728 |
| 20 | 1068636 |
| 21 | 1194552 |
| 22 | 1327476 |
| 23 | 1467408 |
| 24 | 1614348 |
| 25 | 1768296 |
| 26 | 1929252 |
| 27 | 2097216 |
| 28 | 2272188 |
| 29 | 2454168 |
| 30 | 2643156 |