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 | 4 |
| 5 | 15 |
| 6 | 52 |
| 7 | 151 |
| 8 | 372 |
| 9 | 799 |
| 10 | 1540 |
| 11 | 2727 |
| 12 | 4516 |
| 13 | 7087 |
| 14 | 10644 |
| 15 | 15415 |
| 16 | 21652 |
| 17 | 29631 |
| 18 | 39652 |
| 19 | 52039 |
| 20 | 67140 |
| 21 | 85327 |
| 22 | 106996 |
| 23 | 132567 |
| 24 | 162484 |
| 25 | 197215 |
| 26 | 237252 |
| 27 | 283111 |
| 28 | 335332 |
| 29 | 394479 |
| 30 | 461140 |
| 31 | 535927 |
| 32 | 619476 |
| 33 | 712447 |
| 34 | 815524 |
| 35 | 929415 |
| 36 | 1054852 |
| 37 | 1192591 |
| 38 | 1343412 |
| 39 | 1508119 |
| 40 | 1687540 |