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 | 1 |
| 1 | 0 |
| 2 | 2 |
| 3 | 1 |
| 4 | 2 |
| 5 | 4 |
| 6 | 1 |
| 7 | 8 |
| 8 | 2 |
| 9 | 9 |
| 10 | 10 |
| 11 | 4 |
| 12 | 25 |
| 13 | 0 |
| 14 | 34 |
| 15 | 17 |
| 16 | 18 |
| 17 | 68 |
| 18 | -15 |
| 19 | 120 |
| 20 | 2 |
| 21 | 89 |
| 22 | 154 |
| 23 | -60 |
| 24 | 393 |
| 25 | -144 |
| 26 | 418 |
| 27 | 225 |
| 28 | -94 |
| 29 | 1156 |
| 30 | -799 |
| 31 | 1768 |
| 32 | -254 |
| 33 | 425 |
| 34 | 2858 |
| 35 | -2940 |
| 36 | 6649 |
| 37 | -3872 |
| 38 | 4642 |
| 39 | 4785 |
| 40 | -7886 |
| 41 | 21956 |
| 42 | -20271 |
| 43 | 26456 |
| 44 | -2814 |
| 45 | -11271 |
| 46 | 61370 |
| 47 | -78268 |
| 48 | 117097 |
| 49 | -72624 |
| 50 | 33186 |
| 51 | 128385 |
| 52 | -240446 |
| 53 | 435204 |