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) |
|---|---|
| 4 | 1 |
| 5 | 2 |
| 6 | 8 |
| 7 | 21 |
| 8 | 48 |
| 9 | 99 |
| 10 | 186 |
| 11 | 330 |
| 12 | 556 |
| 13 | 895 |
| 14 | 1397 |
| 15 | 2107 |
| 16 | 3097 |
| 17 | 4459 |
| 18 | 6264 |
| 19 | 8644 |
| 20 | 11760 |
| 21 | 15742 |
| 22 | 20790 |
| 23 | 27128 |
| 24 | 34993 |
| 25 | 44664 |
| 26 | 56473 |
| 27 | 70784 |
| 28 | 87995 |
| 29 | 108564 |
| 30 | 132970 |
| 31 | 161828 |
| 32 | 195686 |
| 33 | 235274 |
| 34 | 281349 |
| 35 | 334682 |
| 36 | 396202 |
| 37 | 466849 |
| 38 | 547712 |
| 39 | 639935 |
| 40 | 744716 |
| 41 | 863443 |