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 | -7 |
| 3 | -13 |
| 4 | 14 |
| 5 | -31 |
| 6 | 91 |
| 7 | -57 |
| 8 | -8 |
| 9 | 39 |
| 10 | 217 |
| 11 | -133 |
| 12 | -182 |
| 13 | -183 |
| 14 | 399 |
| 15 | 403 |
| 16 | 0 |
| 17 | -307 |
| 18 | -273 |
| 19 | -381 |
| 20 | -434 |
| 21 | 741 |
| 22 | 931 |
| 23 | -553 |
| 24 | 104 |
| 25 | 155 |
| 26 | 1281 |
| 27 | -27 |
| 28 | -798 |
| 29 | -871 |
| 30 | -2821 |
| 31 | -993 |
| 32 | 0 |
| 33 | 1729 |
| 34 | 2149 |
| 35 | 1767 |
| 36 | 546 |
| 37 | -1407 |
| 38 | 2667 |
| 39 | 2379 |
| 40 | 248 |
| 41 | -1723 |
| 42 | -5187 |
| 43 | -1893 |
| 44 | -1862 |
| 45 | -1209 |
| 46 | 3871 |
| 47 | -2257 |
| 48 | 0 |
| 49 | 399 |
| 50 | -1085 |