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 | 27 |
| 2 | 2313 |
| 3 | 249903 |
| 4 | 24183069 |
| 5 | 2258634081 |
| 6 | 249410097687 |
| 7 | 24350854001805 |
| 8 | 2229543293296319 |
| 9 | 248640535848971067 |
| 10 | 24502928886295666773 |
| 11 | 2255382216082613264687 |
| 12 | 247524358984342778844555 |
| 13 | 24637651997205933916917957 |
| 14 | 2280497169597819727642768343 |
| 15 | 246037303364254649637740936547 |