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 | 5 |
| 1 | 6 |
| 2 | 6 |
| 3 | 6 |
| 4 | 6 |
| 5 | -4 |
| 6 | -60 |
| 7 | -246 |
| 8 | -722 |
| 9 | -1758 |
| 10 | -3754 |
| 11 | -7144 |
| 12 | -11868 |
| 13 | -15646 |
| 14 | -9458 |
| 15 | 32726 |
| 16 | 174750 |
| 17 | 555668 |
| 18 | 1446564 |
| 19 | 3310642 |
| 20 | 6788406 |
| 21 | 12366066 |
| 22 | 19107358 |
| 23 | 21047904 |
| 24 | -1585148 |
| 25 | -101419654 |
| 26 | -400928730 |
| 27 | -1155269658 |
| 28 | -2838111242 |
| 29 | -6203242964 |
| 30 | -12144929980 |
| 31 | -20857830310 |
| 32 | -29087301442 |