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 | 17 |
| 1 | 137 |
| 2 | 154 |
| 3 | 291 |
| 4 | 2482 |
| 5 | 84679 |
| 6 | 679914 |
| 7 | 764593 |
| 8 | 1444507 |
| 9 | 12320649 |
| 10 | 420346573 |
| 11 | 3375093233 |
| 12 | 3795439806 |
| 13 | 7170533039 |
| 14 | 61159704118 |
| 15 | 2086600473051 |
| 16 | 16753963488526 |
| 17 | 18840563961577 |
| 18 | 35594527450103 |
| 19 | 303596783562401 |
| 20 | 10357885168571737 |
| 21 | 83166678132136297 |