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 | 1532 |
| 3 | 6402 |
| 4 | 19884 |
| 5 | 51128 |
| 6 | 115188 |
| 7 | 235180 |
| 8 | 445096 |
| 9 | 792822 |
| 10 | 1343814 |
| 11 | 2185396 |
| 12 | 3431466 |
| 13 | 5227806 |
| 14 | 7758398 |
| 15 | 11251894 |
| 16 | 15989150 |
| 17 | 22311572 |
| 18 | 30630012 |
| 19 | 41434474 |
| 20 | 55305224 |
| 21 | 72924016 |
| 22 | 95086728 |
| 23 | 122717140 |
| 24 | 156881256 |
| 25 | 198802766 |
| 26 | 249880274 |
| 27 | 311704608 |
| 28 | 386077910 |