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 | 7 |
| 3 | 32 |
| 4 | 191 |
| 5 | 1076 |
| 6 | 6252 |
| 7 | 36454 |
| 8 | 214784 |
| 9 | 1274786 |
| 10 | 7621670 |
| 11 | 45861804 |
| 12 | 277601505 |
| 13 | 1689349524 |
| 14 | 10331083034 |
| 15 | 63462615822 |
| 16 | 391449573689 |
| 17 | 2423684611456 |
| 18 | 15058835953673 |
| 19 | 93865873942596 |
| 20 | 586844454182810 |
| 21 | 3679133098371548 |