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 | 0 |
| 2 | -15 |
| 3 | -80 |
| 4 | -255 |
| 5 | -624 |
| 6 | -1295 |
| 7 | -2400 |
| 8 | -4095 |
| 9 | -6560 |
| 10 | -9999 |
| 11 | -14640 |
| 12 | -20735 |
| 13 | -28560 |
| 14 | -38415 |
| 15 | -50624 |
| 16 | -65535 |
| 17 | -83520 |
| 18 | -104975 |
| 19 | -130320 |
| 20 | -159999 |
| 21 | -194480 |
| 22 | -234255 |
| 23 | -279840 |
| 24 | -331775 |
| 25 | -390624 |
| 26 | -456975 |
| 27 | -531440 |
| 28 | -614655 |
| 29 | -707280 |
| 30 | -809999 |
| 31 | -923520 |
| 32 | -1048575 |
| 33 | -1185920 |
| 34 | -1336335 |
| 35 | -1500624 |