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 | 49999999 |
| 2 | 16666666 |
| 3 | 6666666 |
| 4 | 3809523 |
| 5 | 2077920 |
| 6 | 1598400 |
| 7 | 1128284 |
| 8 | 950133 |
| 9 | 743581 |
| 10 | 564099 |
| 11 | 509508 |
| 12 | 413103 |
| 13 | 362709 |
| 14 | 337382 |
| 15 | 301484 |
| 16 | 261684 |
| 17 | 230683 |
| 18 | 219393 |
| 19 | 196552 |
| 20 | 182782 |
| 21 | 175351 |
| 22 | 159910 |
| 23 | 150351 |
| 24 | 138581 |
| 25 | 125778 |
| 26 | 119552 |
| 27 | 116075 |
| 28 | 110630 |
| 29 | 107564 |
| 30 | 102739 |
| 31 | 90485 |