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 | 6 |
| 2 | 9 |
| 3 | -16 |
| 4 | -66 |
| 5 | -54 |
| 6 | 98 |
| 7 | 300 |
| 8 | 243 |
| 9 | -364 |
| 10 | -1128 |
| 11 | -828 |
| 12 | 1221 |
| 13 | 3498 |
| 14 | 2511 |
| 15 | -3528 |
| 16 | -9876 |
| 17 | -6804 |
| 18 | 9358 |
| 19 | 25428 |
| 20 | 17217 |
| 21 | -23068 |
| 22 | -61644 |
| 23 | -40824 |
| 24 | 53916 |
| 25 | 141318 |
| 26 | 92340 |
| 27 | -119912 |
| 28 | -310554 |
| 29 | -199980 |
| 30 | 256792 |
| 31 | 656436 |
| 32 | 418311 |
| 33 | -530960 |
| 34 | -1344144 |
| 35 | -847584 |
| 36 | 1066157 |
| 37 | 2673372 |