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 | 4 |
| 2 | 124 |
| 3 | 217 |
| 4 | 561 |
| 5 | 781 |
| 6 | 1541 |
| 7 | 1729 |
| 8 | 1891 |
| 9 | 2821 |
| 10 | 4123 |
| 11 | 5461 |
| 12 | 5611 |
| 13 | 5662 |
| 14 | 5731 |
| 15 | 6601 |
| 16 | 7449 |
| 17 | 7813 |
| 18 | 8029 |
| 19 | 8911 |
| 20 | 9881 |
| 21 | 11041 |
| 22 | 11476 |
| 23 | 12801 |
| 24 | 13021 |
| 25 | 13333 |
| 26 | 13981 |
| 27 | 14981 |
| 28 | 15751 |
| 29 | 15841 |
| 30 | 16297 |
| 31 | 17767 |
| 32 | 21361 |
| 33 | 22791 |
| 34 | 23653 |
| 35 | 24211 |
| 36 | 25327 |
| 37 | 25351 |
| 38 | 29341 |
| 39 | 29539 |