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 | 31 |
| 3 | 118 |
| 4 | 290 |
| 5 | 575 |
| 6 | 1001 |
| 7 | 1596 |
| 8 | 2388 |
| 9 | 3405 |
| 10 | 4675 |
| 11 | 6226 |
| 12 | 8086 |
| 13 | 10283 |
| 14 | 12845 |
| 15 | 15800 |
| 16 | 19176 |
| 17 | 23001 |
| 18 | 27303 |
| 19 | 32110 |
| 20 | 37450 |
| 21 | 43351 |
| 22 | 49841 |
| 23 | 56948 |
| 24 | 64700 |
| 25 | 73125 |
| 26 | 82251 |
| 27 | 92106 |
| 28 | 102718 |
| 29 | 114115 |
| 30 | 126325 |
| 31 | 139376 |
| 32 | 153296 |
| 33 | 168113 |
| 34 | 183855 |
| 35 | 200550 |
| 36 | 218226 |
| 37 | 236911 |
| 38 | 256633 |