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) |
|---|---|
| 0 | 2 |
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 0 |
| 5 | 0 |
| 6 | 0 |
| 7 | 0 |
| 8 | -1 |
| 9 | 0 |
| 10 | 0 |
| 11 | 0 |
| 12 | 0 |
| 13 | 0 |
| 14 | 0 |
| 15 | -4 |
| 16 | 3 |
| 17 | 0 |
| 18 | 0 |
| 19 | 0 |
| 20 | 0 |
| 21 | 0 |
| 22 | -30 |
| 23 | 48 |
| 24 | -19 |
| 25 | 0 |
| 26 | 0 |
| 27 | 0 |
| 28 | -36 |
| 29 | -136 |
| 30 | 468 |
| 31 | -408 |
| 32 | 111 |
| 33 | 0 |
| 34 | -150 |
| 35 | -180 |
| 36 | -135 |
| 37 | 3240 |
| 38 | -5340 |
| 39 | 3128 |
| 40 | -1105 |
| 41 | -612 |
| 42 | 696 |
| 43 | 1956 |
| 44 | 15717 |
| 45 | -51368 |
| 46 | 52988 |
| 47 | -25648 |
| 48 | 5696 |
| 49 | 8344 |
| 50 | 12336 |
| 51 | 48372 |