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 | 353 |
| 2 | 7793 |
| 3 | 45377 |
| 4 | 2131937 |
| 5 | 2782097 |
| 6 | 23705153 |
| 7 | 36393857 |
| 8 | 142457633 |
| 9 | 423617057 |
| 10 | 780627473 |
| 11 | 19243704833 |
| 12 | 44507912417 |
| 13 | 135498076577 |
| 14 | 221043906737 |
| 15 | 386218778417 |
| 16 | 512825188193 |
| 17 | 652841559233 |
| 18 | 1150861306913 |
| 19 | 1285043991857 |