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 | 4 |
| 3 | 24 |
| 4 | 84 |
| 5 | 232 |
| 6 | 524 |
| 7 | 1052 |
| 8 | 1868 |
| 9 | 3144 |
| 10 | 4876 |
| 11 | 7440 |
| 12 | 10724 |
| 13 | 15124 |
| 14 | 20604 |
| 15 | 27632 |
| 16 | 36124 |
| 17 | 46672 |
| 18 | 59108 |
| 19 | 74184 |
| 20 | 91488 |
| 21 | 112380 |
| 22 | 136044 |
| 23 | 163724 |
| 24 | 194924 |
| 25 | 230932 |
| 26 | 271124 |
| 27 | 316992 |
| 28 | 367748 |
| 29 | 425124 |
| 30 | 488116 |
| 31 | 558820 |
| 32 | 635964 |
| 33 | 721824 |
| 34 | 815044 |
| 35 | 918132 |
| 36 | 1029524 |
| 37 | 1152012 |
| 38 | 1283788 |
| 39 | 1427964 |
| 40 | 1582328 |
| 41 | 1750760 |