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 | 3 |
| 3 | 21 |
| 4 | 147 |
| 5 | 217 |
| 6 | 781 |
| 7 | 903 |
| 8 | 1323 |
| 9 | 3249 |
| 10 | 3267 |
| 11 | 3591 |
| 12 | 5929 |
| 13 | 6897 |
| 14 | 7623 |
| 15 | 8001 |
| 16 | 8673 |
| 17 | 10017 |
| 18 | 11187 |
| 19 | 11997 |
| 20 | 17181 |
| 21 | 21413 |
| 22 | 21791 |
| 23 | 23529 |
| 24 | 38829 |
| 25 | 51183 |
| 26 | 54033 |
| 27 | 58653 |
| 28 | 68229 |
| 29 | 71391 |
| 30 | 75593 |
| 31 | 83853 |
| 32 | 87813 |
| 33 | 97641 |
| 34 | 128331 |
| 35 | 171647 |
| 36 | 217143 |
| 37 | 227829 |
| 38 | 249159 |
| 39 | 302841 |
| 40 | 307347 |
| 41 | 389403 |