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 | 1 |
| 2 | 2 |
| 3 | 3 |
| 4 | 4 |
| 5 | 8 |
| 6 | 9 |
| 7 | 15 |
| 8 | 27 |
| 9 | 63 |
| 10 | 195 |
| 11 | 728 |
| 12 | 1443 |
| 13 | 3843 |
| 14 | 5475 |
| 15 | 6174 |
| 16 | 11913 |
| 17 | 13376 |
| 18 | 24963 |
| 19 | 37635 |
| 20 | 77283 |
| 21 | 98595 |
| 22 | 113398 |
| 23 | 158403 |
| 24 | 178083 |
| 25 | 209763 |
| 26 | 293763 |
| 27 | 294335 |
| 28 | 319124 |
| 29 | 376995 |
| 30 | 406503 |
| 31 | 438243 |
| 32 | 454275 |
| 33 | 538755 |
| 34 | 574563 |
| 35 | 770883 |
| 36 | 996003 |
| 37 | 1196835 |
| 38 | 1331715 |
| 39 | 1444803 |
| 40 | 1473795 |