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 | -1 |
| 2 | -3 |
| 3 | -1 |
| 4 | 0 |
| 5 | 10 |
| 6 | 8 |
| 7 | 12 |
| 8 | 1 |
| 9 | -28 |
| 10 | -29 |
| 11 | -67 |
| 12 | -51 |
| 13 | -28 |
| 14 | 79 |
| 15 | 163 |
| 16 | 256 |
| 17 | 343 |
| 18 | 273 |
| 19 | 136 |
| 20 | -351 |
| 21 | -649 |
| 22 | -1446 |
| 23 | -1751 |
| 24 | -1889 |
| 25 | -1453 |
| 26 | -124 |
| 27 | 1924 |
| 28 | 5138 |
| 29 | 7608 |
| 30 | 10636 |
| 31 | 10903 |
| 32 | 10054 |
| 33 | 3143 |
| 34 | -5799 |
| 35 | -20521 |
| 36 | -37217 |
| 37 | -53057 |
| 38 | -65661 |
| 39 | -66086 |
| 40 | -54430 |
| 41 | -15648 |
| 42 | 37179 |
| 43 | 122732 |