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) |
|---|---|
| 8 | 1 |
| 9 | 8 |
| 10 | 20 |
| 11 | 54 |
| 12 | 105 |
| 13 | 257 |
| 14 | 431 |
| 15 | 919 |
| 16 | 1492 |
| 17 | 2663 |
| 18 | 3978 |
| 19 | 6871 |
| 20 | 9690 |
| 21 | 15653 |
| 22 | 21648 |
| 23 | 32511 |
| 24 | 43263 |
| 25 | 63622 |
| 26 | 82225 |
| 27 | 116846 |
| 28 | 149177 |
| 29 | 203580 |
| 30 | 254475 |
| 31 | 342988 |
| 32 | 420804 |
| 33 | 555345 |
| 34 | 675767 |
| 35 | 870022 |
| 36 | 1043460 |
| 37 | 1331311 |
| 38 | 1577532 |
| 39 | 1984637 |
| 40 | 2338385 |
| 41 | 2890593 |