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 | -8 |
| 1 | -12 |
| 2 | -98 |
| 3 | -636 |
| 4 | -4424 |
| 5 | -30138 |
| 6 | -207032 |
| 7 | -1417788 |
| 8 | -9720866 |
| 9 | -66619404 |
| 10 | -456638168 |
| 11 | -3129787002 |
| 12 | -21452029928 |
| 13 | -147034005996 |
| 14 | -1007787102434 |
| 15 | -6907472856348 |
| 16 | -47344530365672 |
| 17 | -324504220137018 |
| 18 | -2224185061818776 |
| 19 | -15244791078484764 |
| 20 | -104489352838678178 |