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 | 0 |
| 3 | 32 |
| 4 | 156 |
| 5 | 456 |
| 6 | 1040 |
| 7 | 2040 |
| 8 | 3612 |
| 9 | 5936 |
| 10 | 9216 |
| 11 | 13680 |
| 12 | 19580 |
| 13 | 27192 |
| 14 | 36816 |
| 15 | 48776 |
| 16 | 63420 |
| 17 | 81120 |
| 18 | 102272 |
| 19 | 127296 |
| 20 | 156636 |
| 21 | 190760 |
| 22 | 230160 |
| 23 | 275352 |
| 24 | 326876 |
| 25 | 385296 |
| 26 | 451200 |
| 27 | 525200 |
| 28 | 607932 |
| 29 | 700056 |
| 30 | 802256 |
| 31 | 915240 |
| 32 | 1039740 |
| 33 | 1176512 |
| 34 | 1326336 |