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 | 756 |
| 2 | 2688 |
| 3 | 7560 |
| 4 | 18144 |
| 5 | 38808 |
| 6 | 76032 |
| 7 | 138996 |
| 8 | 240240 |
| 9 | 396396 |
| 10 | 628992 |
| 11 | 965328 |
| 12 | 1439424 |
| 13 | 2093040 |
| 14 | 2976768 |
| 15 | 4151196 |
| 16 | 5688144 |
| 17 | 7671972 |
| 18 | 10200960 |
| 19 | 13388760 |
| 20 | 17365920 |
| 21 | 22281480 |
| 22 | 28304640 |
| 23 | 35626500 |
| 24 | 44461872 |
| 25 | 55051164 |
| 26 | 67662336 |
| 27 | 82592928 |