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 | 0 |
| 4 | -5 |
| 5 | -14 |
| 6 | -26 |
| 7 | -29 |
| 8 | 5 |
| 9 | 119 |
| 10 | 348 |
| 11 | 639 |
| 12 | 708 |
| 13 | -128 |
| 14 | -2943 |
| 15 | -8571 |
| 16 | -15707 |
| 17 | -17340 |
| 18 | 3347 |
| 19 | 72718 |
| 20 | 211126 |
| 21 | 386091 |
| 22 | 424633 |
| 23 | -87173 |
| 24 | -1796760 |
| 25 | -5200513 |
| 26 | -9490312 |
| 27 | -10398336 |
| 28 | 2263553 |
| 29 | 44394265 |
| 30 | 128099033 |
| 31 | 233273880 |
| 32 | 254623403 |
| 33 | -58615334 |
| 34 | -1096863450 |
| 35 | -3155300397 |