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) |
|---|---|
| 12 | 6 |
| 13 | 61 |
| 14 | 329 |
| 15 | 1289 |
| 16 | 4133 |
| 17 | 11462 |
| 18 | 28536 |
| 19 | 65194 |
| 20 | 138956 |
| 21 | 279457 |
| 22 | 535131 |
| 23 | 982224 |
| 24 | 1737756 |
| 25 | 2976311 |
| 26 | 4953198 |
| 27 | 8033628 |
| 28 | 12731680 |
| 29 | 19758178 |
| 30 | 30083086 |
| 31 | 45010674 |
| 32 | 66275305 |
| 33 | 96155116 |
| 34 | 137614204 |
| 35 | 194469039 |
| 36 | 271593493 |
| 37 | 375156018 |
| 38 | 512907786 |