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 | 190 |
| 2 | 15504 |
| 3 | 749360 |
| 4 | 24732110 |
| 5 | 605537790 |
| 6 | 11619550320 |
| 7 | 181746027600 |
| 8 | 2386644625950 |
| 9 | 26923893369075 |
| 10 | 265762390788000 |
| 11 | 2330056309932000 |
| 12 | 18372187417457250 |
| 13 | 131651129456894250 |
| 14 | 865026329992488000 |
| 15 | 5251754282090616000 |
| 16 | 29657709797595709500 |
| 17 | 156694210053607278000 |