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 | 1 |
| 3 | 6 |
| 4 | 25 |
| 5 | 87 |
| 6 | 238 |
| 7 | 575 |
| 8 | 1228 |
| 9 | 2425 |
| 10 | 4446 |
| 11 | 7734 |
| 12 | 12806 |
| 13 | 20422 |
| 14 | 31444 |
| 15 | 47072 |
| 16 | 68639 |
| 17 | 97929 |
| 18 | 136893 |
| 19 | 188061 |
| 20 | 254170 |
| 21 | 338679 |
| 22 | 445297 |
| 23 | 578616 |
| 24 | 743524 |
| 25 | 945968 |
| 26 | 1192243 |
| 27 | 1489894 |
| 28 | 1846869 |
| 29 | 2272575 |
| 30 | 2776880 |
| 31 | 3371335 |
| 32 | 4068016 |
| 33 | 4880921 |
| 34 | 5824640 |
| 35 | 6915942 |
| 36 | 8172258 |
| 37 | 9613470 |