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) |
|---|---|
| 2 | 1 |
| 3 | 20 |
| 4 | 131 |
| 5 | 469 |
| 6 | 1262 |
| 7 | 2862 |
| 8 | 5780 |
| 9 | 10725 |
| 10 | 18647 |
| 11 | 30784 |
| 12 | 48713 |
| 13 | 74405 |
| 14 | 110284 |
| 15 | 159290 |
| 16 | 224946 |
| 17 | 311429 |
| 18 | 423645 |
| 19 | 567308 |
| 20 | 749023 |
| 21 | 976373 |
| 22 | 1258010 |
| 23 | 1603750 |
| 24 | 2024672 |
| 25 | 2533221 |
| 26 | 3143315 |
| 27 | 3870456 |
| 28 | 4731845 |
| 29 | 5746501 |
| 30 | 6935384 |
| 31 | 8321522 |
| 32 | 9930142 |
| 33 | 11788805 |
| 34 | 13927545 |
| 35 | 16379012 |