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 | 2 |
| 3 | -1 |
| 4 | 5 |
| 5 | 0 |
| 6 | -3 |
| 7 | -10 |
| 8 | 14 |
| 9 | 14 |
| 10 | 9 |
| 11 | -2 |
| 12 | -20 |
| 13 | -33 |
| 14 | -40 |
| 15 | -25 |
| 16 | 71 |
| 17 | 54 |
| 18 | 54 |
| 19 | 35 |
| 20 | 5 |
| 21 | 26 |
| 22 | 15 |
| 23 | -8 |
| 24 | -80 |
| 25 | -80 |
| 26 | -93 |
| 27 | -93 |
| 28 | -135 |
| 29 | -164 |
| 30 | -149 |
| 31 | -180 |
| 32 | 204 |
| 33 | 237 |
| 34 | 220 |
| 35 | 255 |
| 36 | 255 |
| 37 | 218 |
| 38 | 199 |
| 39 | 238 |
| 40 | 118 |
| 41 | 77 |
| 42 | 98 |
| 43 | 55 |
| 44 | -11 |
| 45 | -11 |
| 46 | -34 |
| 47 | -81 |
| 48 | -369 |
| 49 | -369 |
| 50 | -369 |
| 51 | -318 |
| 52 | -396 |
| 53 | -449 |
| 54 | -449 |
| 55 | -394 |
| 56 | -562 |
| 57 | -505 |
| 58 | -534 |