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 | -4 |
| 3 | -13 |
| 4 | -9 |
| 5 | -34 |
| 6 | 11 |
| 7 | -38 |
| 8 | -38 |
| 9 | -38 |
| 10 | 87 |
| 11 | -34 |
| 12 | -70 |
| 13 | -239 |
| 14 | 6 |
| 15 | 231 |
| 16 | 231 |
| 17 | -58 |
| 18 | -58 |
| 19 | -419 |
| 20 | -519 |
| 21 | -78 |
| 22 | 527 |
| 23 | -2 |
| 24 | -2 |
| 25 | -2 |
| 26 | 843 |
| 27 | 843 |
| 28 | 647 |
| 29 | -194 |
| 30 | -1319 |
| 31 | -2280 |
| 32 | -2280 |
| 33 | -1191 |
| 34 | 254 |
| 35 | 1479 |
| 36 | 1479 |
| 37 | 110 |
| 38 | 1915 |
| 39 | 3436 |
| 40 | 3436 |
| 41 | 1755 |
| 42 | -450 |
| 43 | -2299 |
| 44 | -2783 |
| 45 | -2783 |
| 46 | -138 |
| 47 | -2347 |
| 48 | -2347 |
| 49 | -2347 |
| 50 | -2347 |
| 51 | 254 |
| 52 | -422 |