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 | 3 |
| 1 | 55 |
| 2 | 987 |
| 3 | 17711 |
| 4 | 317811 |
| 5 | 5702887 |
| 6 | 102334155 |
| 7 | 1836311903 |
| 8 | 32951280099 |
| 9 | 591286729879 |
| 10 | 10610209857723 |
| 11 | 190392490709135 |
| 12 | 3416454622906707 |
| 13 | 61305790721611591 |
| 14 | 1100087778366101931 |
| 15 | 19740274219868223167 |
| 16 | 354224848179261915075 |
| 17 | 6356306993006846248183 |