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) |
|---|---|
| 3 | 2 |
| 4 | 16 |
| 5 | 110 |
| 6 | 416 |
| 7 | 1470 |
| 8 | 4128 |
| 9 | 9102 |
| 10 | 20240 |
| 11 | 40106 |
| 12 | 71312 |
| 13 | 127426 |
| 14 | 203056 |
| 15 | 336070 |
| 16 | 491392 |
| 17 | 790126 |
| 18 | 1067160 |
| 19 | 1650530 |
| 20 | 2086720 |
| 21 | 3180030 |
| 22 | 3878952 |
| 23 | 5768170 |
| 24 | 6771680 |
| 25 | 9871350 |
| 26 | 11231064 |
| 27 | 16241094 |
| 28 | 17936352 |
| 29 | 25665290 |
| 30 | 27729640 |
| 31 | 39210350 |
| 32 | 41583104 |
| 33 | 58341778 |
| 34 | 60751880 |
| 35 | 84510650 |