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 | 41 |
| 2 | 1607 |
| 3 | 32441 |
| 4 | 557729 |
| 5 | 8265137 |
| 6 | 115438691 |
| 7 | 1523976761 |
| 8 | 19358094101 |
| 9 | 239211161009 |
| 10 | 2891512532927 |
| 11 | 34338035342339 |
| 12 | 401888325140039 |
| 13 | 4646528385435887 |