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 | 20 |
| 3 | 32 |
| 4 | 95 |
| 5 | 207 |
| 6 | 720 |
| 7 | 1152 |
| 8 | 1215 |
| 9 | 1287 |
| 10 | 3420 |
| 11 | 3807 |
| 12 | 6255 |
| 13 | 6407 |
| 14 | 7452 |
| 15 | 7767 |
| 16 | 18095 |
| 17 | 23247 |
| 18 | 25920 |
| 19 | 41472 |
| 20 | 43740 |
| 21 | 46332 |
| 22 | 46647 |
| 23 | 69255 |
| 24 | 123120 |
| 25 | 137052 |
| 26 | 174087 |
| 27 | 211815 |
| 28 | 217935 |
| 29 | 225180 |
| 30 | 230652 |
| 31 | 268272 |
| 32 | 279612 |
| 33 | 279927 |
| 34 | 651420 |
| 35 | 836892 |
| 36 | 933120 |
| 37 | 1416447 |