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 | 1 |
| 1 | 2 |
| 2 | 4 |
| 3 | 9 |
| 4 | 20 |
| 5 | 41 |
| 6 | 77 |
| 7 | 134 |
| 8 | 219 |
| 9 | 340 |
| 10 | 506 |
| 11 | 727 |
| 12 | 1014 |
| 13 | 1379 |
| 14 | 1835 |
| 15 | 2396 |
| 16 | 3077 |
| 17 | 3894 |
| 18 | 4864 |
| 19 | 6005 |
| 20 | 7336 |
| 21 | 8877 |
| 22 | 10649 |
| 23 | 12674 |
| 24 | 14975 |
| 25 | 17576 |
| 26 | 20502 |
| 27 | 23779 |
| 28 | 27434 |
| 29 | 31495 |
| 30 | 35991 |
| 31 | 40952 |
| 32 | 46409 |
| 33 | 52394 |
| 34 | 58940 |
| 35 | 66081 |
| 36 | 73852 |
| 37 | 82289 |
| 38 | 91429 |
| 39 | 101310 |
| 40 | 111971 |