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 | 1 |
| 4 | 1 |
| 5 | 1 |
| 6 | 1 |
| 7 | 1 |
| 8 | 0 |
| 9 | -4 |
| 10 | -14 |
| 11 | -34 |
| 12 | -69 |
| 13 | -125 |
| 14 | -209 |
| 15 | -329 |
| 16 | -493 |
| 17 | -705 |
| 18 | -955 |
| 19 | -1199 |
| 20 | -1324 |
| 21 | -1092 |
| 22 | -56 |
| 23 | 2560 |
| 24 | 8025 |
| 25 | 18313 |
| 26 | 36353 |
| 27 | 66273 |
| 28 | 113525 |
| 29 | 184653 |
| 30 | 286257 |
| 31 | 422377 |
| 32 | 589028 |
| 33 | 763912 |
| 34 | 888378 |
| 35 | 837502 |
| 36 | 372835 |
| 37 | -928725 |
| 38 | -3776537 |
| 39 | -9302337 |
| 40 | -19226889 |
| 41 | -36034869 |
| 42 | -63099331 |
| 43 | -104630831 |
| 44 | -165212760 |