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) |
|---|---|
| 1 | 0 |
| 2 | 378 |
| 3 | 17766 |
| 4 | 39209940 |
| 5 | 1842032556 |
| 6 | 4065365016846 |
| 7 | 190985619471570 |
| 8 | 421505175637435176 |
| 9 | 19801770996209306328 |
| 10 | 43702499616375188919330 |
| 11 | 2053087220237987679246270 |
| 12 | 4531162564803507161896556028 |
| 13 | 212868189148913267563402477956 |
| 14 | 469799997000254729943383533193910 |