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) |
|---|---|
| 1 | 0 |
| 2 | 0 |
| 3 | 2 |
| 4 | 31 |
| 5 | 209 |
| 6 | 560 |
| 7 | 1561 |
| 8 | 2852 |
| 9 | 5894 |
| 10 | 9093 |
| 11 | 15778 |
| 12 | 22304 |
| 13 | 34805 |
| 14 | 46194 |
| 15 | 67399 |
| 16 | 85610 |
| 17 | 118461 |
| 18 | 146218 |
| 19 | 194363 |
| 20 | 233941 |
| 21 | 302115 |
| 22 | 356523 |
| 23 | 448831 |
| 24 | 522153 |
| 25 | 643781 |
| 26 | 738976 |
| 27 | 896563 |
| 28 | 1017619 |
| 29 | 1216376 |
| 30 | 1368946 |
| 31 | 1615516 |
| 32 | 1803028 |
| 33 | 2106173 |
| 34 | 2333683 |
| 35 | 2699501 |
| 36 | 2974256 |
| 37 | 3410946 |