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 | 4 |
| 2 | 111 |
| 3 | 3502 |
| 4 | 110985 |
| 5 | 3517864 |
| 6 | 111505491 |
| 7 | 3534382642 |
| 8 | 112029109005 |
| 9 | 3550979773324 |
| 10 | 112555187335671 |
| 11 | 3567654845960182 |
| 12 | 113083736087142225 |
| 13 | 3584408223207742384 |
| 14 | 113614766854701858651 |
| 15 | 3601240272765698000122 |