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 | 46 |
| 2 | 194 |
| 3 | -167900 |
| 4 | -8842004 |
| 5 | 884083016 |
| 6 | 125639477176 |
| 7 | -4415829390416 |
| 8 | -1893481677885040 |
| 9 | -19202364475675424 |
| 10 | 31870137298174352416 |
| 11 | 1835095760938501860416 |
| 12 | -589384037754831073199936 |
| 13 | -69436314367007836275831680 |
| 14 | 11532279106459848726285343616 |