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 | 4 |
| 2 | -5 |
| 3 | 20 |
| 4 | -29 |
| 5 | 92 |
| 6 | -77 |
| 7 | 212 |
| 8 | -149 |
| 9 | 380 |
| 10 | -461 |
| 11 | 500 |
| 12 | -869 |
| 13 | 812 |
| 14 | -1037 |
| 15 | 1172 |
| 16 | -1637 |
| 17 | 1844 |
| 18 | -1877 |
| 19 | 2612 |
| 20 | -2429 |
| 21 | 2900 |
| 22 | -3341 |
| 23 | 3548 |
| 24 | -4373 |
| 25 | 5036 |
| 26 | -5165 |
| 27 | 5444 |
| 28 | -6005 |
| 29 | 5876 |
| 30 | -6893 |
| 31 | 9236 |
| 32 | -7925 |
| 33 | 10844 |
| 34 | -8477 |
| 35 | 13724 |
| 36 | -9077 |
| 37 | 15572 |
| 38 | -10997 |
| 39 | 16892 |
| 40 | -13037 |
| 41 | 19004 |
| 42 | -13757 |