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 | -2 |
| 4 | 1 |
| 5 | 6 |
| 6 | 1 |
| 7 | -18 |
| 8 | -16 |
| 9 | 50 |
| 10 | 93 |
| 11 | -112 |
| 12 | -428 |
| 13 | 98 |
| 14 | 1713 |
| 15 | 936 |
| 16 | -6004 |
| 17 | -8382 |
| 18 | 17512 |
| 19 | 47608 |
| 20 | -33826 |
| 21 | -221936 |
| 22 | -36335 |
| 23 | 892164 |
| 24 | 862666 |
| 25 | -3051022 |
| 26 | -6076072 |
| 27 | 8026380 |
| 28 | 32247334 |
| 29 | -8222288 |
| 30 | -144487267 |
| 31 | -81500652 |
| 32 | 555489738 |
| 33 | 801700858 |
| 34 | -1751543424 |
| 35 | -4898513044 |