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 | 1 |
| 3 | -3 |
| 4 | -3 |
| 5 | -7 |
| 6 | -11 |
| 7 | -15 |
| 8 | -19 |
| 9 | -27 |
| 10 | -15 |
| 11 | -23 |
| 12 | -15 |
| 13 | -7 |
| 14 | 17 |
| 15 | 37 |
| 16 | 77 |
| 17 | 113 |
| 18 | 181 |
| 19 | 249 |
| 20 | 349 |
| 21 | 381 |
| 22 | 529 |
| 23 | 609 |
| 24 | 737 |
| 25 | 817 |
| 26 | 945 |
| 27 | 957 |
| 28 | 1037 |
| 29 | 1001 |
| 30 | 981 |
| 31 | 785 |
| 32 | 605 |
| 33 | 133 |
| 34 | -303 |
| 35 | -1095 |
| 36 | -1727 |
| 37 | -3015 |
| 38 | -4191 |
| 39 | -5963 |
| 40 | -7667 |
| 41 | -10095 |
| 42 | -12379 |
| 43 | -15495 |
| 44 | -18339 |
| 45 | -22067 |
| 46 | -25631 |