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 | 0 |
| 1 | 8 |
| 2 | 152 |
| 3 | 2736 |
| 4 | 49104 |
| 5 | 881144 |
| 6 | 15811496 |
| 7 | 283725792 |
| 8 | 5091252768 |
| 9 | 91358824040 |
| 10 | 1639367579960 |
| 11 | 29417257615248 |
| 12 | 527871269494512 |
| 13 | 9472265593285976 |
| 14 | 169972909409653064 |
| 15 | 3050040103780469184 |
| 16 | 54730748958638792256 |
| 17 | 982103441151717791432 |