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 | 2 |
| 4 | 3 |
| 5 | 15 |
| 6 | 24 |
| 7 | 30 |
| 8 | 47 |
| 9 | 165 |
| 10 | 197 |
| 11 | 211 |
| 12 | 225 |
| 13 | 239 |
| 14 | 394 |
| 15 | 408 |
| 16 | 422 |
| 17 | 2190 |
| 18 | 2445 |
| 19 | 2745 |
| 20 | 2955 |
| 21 | 3165 |
| 22 | 5490 |
| 23 | 5700 |
| 24 | 8565 |
| 25 | 38417 |
| 26 | 38613 |
| 27 | 38809 |
| 28 | 39005 |
| 29 | 41175 |
| 30 | 41371 |
| 31 | 41567 |
| 32 | 41763 |
| 33 | 43737 |
| 34 | 43933 |
| 35 | 44129 |
| 36 | 48159 |
| 37 | 55962 |
| 38 | 76834 |
| 39 | 77030 |
| 40 | 77226 |
| 41 | 79592 |
| 42 | 79788 |