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 | -3 |
| 4 | 5 |
| 5 | 3 |
| 6 | 21 |
| 7 | 45 |
| 8 | 15 |
| 9 | 77 |
| 10 | 117 |
| 11 | 35 |
| 12 | 165 |
| 13 | 221 |
| 14 | 63 |
| 15 | 285 |
| 16 | 357 |
| 17 | 99 |
| 18 | 437 |
| 19 | 525 |
| 20 | 143 |
| 21 | 621 |
| 22 | 725 |
| 23 | 195 |
| 24 | 837 |
| 25 | 957 |
| 26 | 255 |
| 27 | 1085 |
| 28 | 1221 |
| 29 | 323 |
| 30 | 1365 |
| 31 | 1517 |
| 32 | 399 |
| 33 | 1677 |
| 34 | 1845 |
| 35 | 483 |
| 36 | 2021 |
| 37 | 2205 |
| 38 | 575 |
| 39 | 2397 |
| 40 | 2597 |
| 41 | 675 |