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 | -8 |
| 2 | 154 |
| 3 | -3491 |
| 4 | 88363 |
| 5 | -2391695 |
| 6 | 67758517 |
| 7 | -1984135184 |
| 8 | 59572675846 |
| 9 | -1824065741672 |
| 10 | 56739965057524 |
| 11 | -1788027005117150 |
| 12 | 56960705737368622 |
| 13 | -1831391418128245478 |
| 14 | 59351217395117651362 |
| 15 | -1936731395137029733043 |
| 16 | 63581744945624043237427 |