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 | 2 |
| 4 | 1 |
| 5 | -1 |
| 6 | 5 |
| 7 | 1 |
| 8 | 4 |
| 9 | -5 |
| 10 | 15 |
| 11 | 4 |
| 12 | 2 |
| 13 | 17 |
| 14 | -23 |
| 15 | 52 |
| 16 | 11 |
| 17 | 17 |
| 18 | 2 |
| 19 | 79 |
| 20 | -109 |
| 21 | 203 |
| 22 | 41 |
| 23 | 46 |
| 24 | 80 |
| 25 | -20 |
| 26 | 397 |
| 27 | -544 |
| 28 | 877 |
| 29 | 162 |
| 30 | 198 |
| 31 | 208 |
| 32 | 418 |
| 33 | -244 |
| 34 | 2134 |
| 35 | -2876 |
| 36 | 4140 |
| 37 | 715 |
| 38 | 841 |
| 39 | 1031 |
| 40 | 994 |
| 41 | 2389 |
| 42 | -2053 |
| 43 | 12196 |
| 44 | -16113 |
| 45 | 21147 |
| 46 | 3425 |
| 47 | 4014 |
| 48 | 4663 |
| 49 | 5771 |
| 50 | 4950 |
| 51 | 14693 |
| 52 | -15819 |
| 53 | 73798 |
| 54 | -95495 |
| 55 | 115975 |