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) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 2 |
| 3 | 6 |
| 4 | 8 |
| 5 | 15 |
| 6 | 30 |
| 7 | 42 |
| 8 | 64 |
| 9 | 99 |
| 10 | 190 |
| 11 | 242 |
| 12 | 384 |
| 13 | 533 |
| 14 | 798 |
| 15 | 1380 |
| 16 | 1824 |
| 17 | 2635 |
| 18 | 3762 |
| 19 | 5320 |
| 20 | 7280 |
| 21 | 12327 |
| 22 | 15554 |
| 23 | 22632 |
| 24 | 30720 |
| 25 | 43425 |
| 26 | 57538 |
| 27 | 80730 |
| 28 | 122920 |
| 29 | 159239 |
| 30 | 220830 |
| 31 | 299150 |
| 32 | 406656 |
| 33 | 542883 |
| 34 | 733278 |
| 35 | 962710 |
| 36 | 1443600 |
| 37 | 1820437 |
| 38 | 2496638 |
| 39 | 3280992 |
| 40 | 4451120 |