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 | 2 |
| 2 | 17 |
| 3 | 269 |
| 4 | 281233 |
| 5 | 1770217 |
| 6 | 1826609 |
| 7 | 2520841 |
| 8 | 3907529 |
| 9 | 7595017 |
| 10 | 8665471 |
| 11 | 9828089 |
| 12 | 11280377 |
| 13 | 12259063 |
| 14 | 17235221 |
| 15 | 27654961 |
| 16 | 54008809 |
| 17 | 70583033 |
| 18 | 75196799 |
| 19 | 85018949 |
| 20 | 87240233 |
| 21 | 106316057 |
| 22 | 111499057 |
| 23 | 168061561 |
| 24 | 176255669 |
| 25 | 201105409 |