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 | -78 |
| 2 | 520 |
| 3 | 480 |
| 4 | -1548 |
| 5 | -1920 |
| 6 | -13668 |
| 7 | 1408 |
| 8 | -1316 |
| 9 | -1252 |
| 10 | 11760 |
| 11 | 12264 |
| 12 | 16992 |
| 13 | 14520 |
| 14 | 16220 |
| 15 | -144 |
| 16 | -87960 |
| 17 | 31428 |
| 18 | 35340 |
| 19 | -1008 |
| 20 | -1008 |
| 21 | 240 |
| 22 | 43464 |
| 23 | -84768 |
| 24 | 264 |
| 25 | 431340 |
| 26 | 45824 |
| 27 | -28540 |
| 28 | -29484 |
| 29 | -56916 |
| 30 | -672 |
| 31 | 120960 |
| 32 | -54260 |
| 33 | 18164 |
| 34 | 31528 |
| 35 | -101736 |
| 36 | -258264 |
| 37 | 356448 |
| 38 | 73440 |
| 39 | 149552 |
| 40 | -18616 |
| 41 | 117864 |
| 42 | 12620 |
| 43 | 125280 |
| 44 | 22064 |
| 45 | -55428 |
| 46 | 112272 |
| 47 | -4992 |
| 48 | -214536 |
| 49 | -72184 |
| 50 | 885960 |
| 51 | 333720 |