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 | 2137453 |
| 2 | 194697747222394 |
| 3 | 2 |
| 4 | 199900 |
| 5 | 19706 |
| 6 | 209534289952018960 |
| 7 | 15 |
| 8 | 198104936410 |
| 9 | 19511030 |
| 10 | 20573 |
| 11 | 20572 |
| 12 | 2137452 |
| 13 | 20534 |
| 14 | 19238 |
| 15 | 2 |
| 16 | 2089707 |
| 17 | 20670629294 |
| 18 | 1 |
| 19 | 21482 |
| 20 | 19278442756937613 |
| 21 | 2074 |
| 22 | 19278442756937612 |
| 23 | 20571 |
| 24 | 194697747222393 |
| 25 | 193 |
| 26 | 197062 |
| 27 | 1 |
| 28 | 197 |
| 29 | 2061823 |