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) |
|---|---|
| 4 | 33 |
| 5 | 378 |
| 6 | 2190 |
| 7 | 9110 |
| 8 | 30300 |
| 9 | 85563 |
| 10 | 213293 |
| 11 | 482085 |
| 12 | 1006950 |
| 13 | 1971185 |
| 14 | 3655053 |
| 15 | 6472533 |
| 16 | 11017505 |
| 17 | 18120840 |
| 18 | 28919970 |
| 19 | 44942618 |
| 20 | 68206473 |
| 21 | 101336700 |
| 22 | 147703280 |
| 23 | 211580280 |
| 24 | 298329258 |
| 25 | 414609113 |
| 26 | 568614795 |
| 27 | 770347395 |
| 28 | 1031918240 |
| 29 | 1367889723 |
| 30 | 1795655703 |
| 31 | 2335864415 |