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 | 0 |
| 1 | 1 |
| 2 | 35 |
| 3 | 210 |
| 4 | 715 |
| 5 | 1820 |
| 6 | 3876 |
| 7 | 7315 |
| 8 | 12650 |
| 9 | 20475 |
| 10 | 31465 |
| 11 | 46376 |
| 12 | 66045 |
| 13 | 91390 |
| 14 | 123410 |
| 15 | 163185 |
| 16 | 211876 |
| 17 | 270725 |
| 18 | 341055 |
| 19 | 424270 |
| 20 | 521855 |
| 21 | 635376 |
| 22 | 766480 |
| 23 | 916895 |
| 24 | 1088430 |
| 25 | 1282975 |
| 26 | 1502501 |
| 27 | 1749060 |
| 28 | 2024785 |
| 29 | 2331890 |
| 30 | 2672670 |
| 31 | 3049501 |
| 32 | 3464840 |
| 33 | 3921225 |
| 34 | 4421275 |