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 | 27 |
| 2 | 104 |
| 3 | 1672 |
| 4 | 23055 |
| 5 | 293426 |
| 6 | 3476318 |
| 7 | 43029161 |
| 8 | 548534827 |
| 9 | 6950600398 |
| 10 | 86968922214 |
| 11 | 1087064387012 |
| 12 | 13644752950393 |
| 13 | 171525134753339 |
| 14 | 2153854540230655 |
| 15 | 27023874463279901 |
| 16 | 339119484253726298 |