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 | 0 |
| 3 | 1 |
| 4 | 1 |
| 5 | 5 |
| 6 | -1 |
| 7 | 1 |
| 8 | -7 |
| 9 | 11 |
| 10 | -47 |
| 11 | -13 |
| 12 | -61 |
| 13 | -29 |
| 14 | -157 |
| 15 | -209 |
| 16 | -3139 |
| 17 | -5123 |
| 18 | -1109 |
| 19 | -2887 |
| 20 | -3547 |
| 21 | -2887 |
| 22 | -3679 |
| 23 | -3319 |
| 24 | -4111 |
| 25 | -26137 |
| 26 | -30757 |
| 27 | -5597 |
| 28 | -2071 |
| 29 | -277 |
| 30 | -343 |
| 31 | -1627 |
| 32 | -12269 |
| 33 | -2269 |
| 34 | -625 |
| 35 | -391 |
| 36 | -1261 |
| 37 | -3629 |
| 38 | -3937 |
| 39 | -1853 |
| 40 | -4979 |
| 41 | -19223 |
| 42 | -21533 |
| 43 | -20873 |
| 44 | -21797 |