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 | 3 |
| 2 | 1 |
| 3 | 1 |
| 4 | 21 |
| 5 | 11 |
| 6 | 43 |
| 7 | 47 |
| 8 | 157 |
| 9 | 753 |
| 10 | 51 |
| 11 | 917 |
| 12 | 273 |
| 13 | 2409 |
| 14 | 703 |
| 15 | 413 |
| 16 | 3729 |
| 17 | 1153 |
| 18 | 6243 |
| 19 | 8789 |
| 20 | 2307 |
| 21 | 4477 |
| 22 | 137 |
| 23 | 403 |
| 24 | 10649 |
| 25 | 4617 |
| 26 | 4533 |
| 27 | 6133 |
| 28 | 4721 |
| 29 | 877 |
| 30 | 2469 |
| 31 | 5967 |
| 32 | 1557 |
| 33 | 1047 |
| 34 | 38931 |
| 35 | 15533 |
| 36 | 6877 |
| 37 | 23987 |
| 38 | 4767 |
| 39 | 18049 |
| 40 | 1463 |
| 41 | 118333 |
| 42 | 27897 |