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 | 2 |
| 1 | 11 |
| 2 | 119 |
| 3 | 1298 |
| 4 | 14159 |
| 5 | 154451 |
| 6 | 1684802 |
| 7 | 18378371 |
| 8 | 200477279 |
| 9 | 2186871698 |
| 10 | 23855111399 |
| 11 | 260219353691 |
| 12 | 2838557779202 |
| 13 | 30963916217531 |
| 14 | 337764520613639 |
| 15 | 3684445810532498 |
| 16 | 40191139395243839 |
| 17 | 438418087537149731 |
| 18 | 4782407823513403202 |
| 19 | 52168067971110285491 |
| 20 | 569066339858699737199 |