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) |
|---|---|
| 1 | 1 |
| 2 | 44 |
| 3 | 432 |
| 4 | -1136 |
| 5 | 610 |
| 6 | -5568 |
| 7 | 6048 |
| 8 | 11456 |
| 9 | -3423 |
| 10 | 26840 |
| 11 | -79920 |
| 12 | 768 |
| 13 | -5470 |
| 14 | -77952 |
| 15 | 263520 |
| 16 | 61696 |
| 17 | 73090 |
| 18 | -150612 |
| 19 | -84240 |
| 20 | -692960 |
| 21 | -139776 |
| 22 | 1030080 |
| 23 | -1025568 |
| 24 | 1410048 |
| 25 | -18525 |
| 26 | -240680 |
| 27 | 1355616 |
| 28 | 10752 |
| 29 | -128222 |
| 30 | -3396480 |
| 31 | -293760 |