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) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 3 |
| 3 | 9 |
| 4 | 22 |
| 5 | 42 |
| 6 | 72 |
| 7 | 115 |
| 8 | 171 |
| 9 | 243 |
| 10 | 334 |
| 11 | 444 |
| 12 | 576 |
| 13 | 733 |
| 14 | 915 |
| 15 | 1125 |
| 16 | 1366 |
| 17 | 1638 |
| 18 | 1944 |
| 19 | 2287 |
| 20 | 2667 |
| 21 | 3087 |
| 22 | 3550 |
| 23 | 4056 |
| 24 | 4608 |
| 25 | 5209 |
| 26 | 5859 |
| 27 | 6561 |
| 28 | 7318 |
| 29 | 8130 |
| 30 | 9000 |
| 31 | 9931 |
| 32 | 10923 |
| 33 | 11979 |
| 34 | 13102 |
| 35 | 14292 |
| 36 | 15552 |
| 37 | 16885 |
| 38 | 18291 |
| 39 | 19773 |
| 40 | 21334 |
| 41 | 22974 |