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) |
|---|---|
| 1 | 0 |
| 2 | 21 |
| 3 | 114 |
| 4 | 333 |
| 5 | 732 |
| 6 | 1365 |
| 7 | 2286 |
| 8 | 3549 |
| 9 | 5208 |
| 10 | 7317 |
| 11 | 9930 |
| 12 | 13101 |
| 13 | 16884 |
| 14 | 21333 |
| 15 | 26502 |
| 16 | 32445 |
| 17 | 39216 |
| 18 | 46869 |
| 19 | 55458 |
| 20 | 65037 |
| 21 | 75660 |
| 22 | 87381 |
| 23 | 100254 |
| 24 | 114333 |
| 25 | 129672 |
| 26 | 146325 |
| 27 | 164346 |
| 28 | 183789 |
| 29 | 204708 |
| 30 | 227157 |
| 31 | 251190 |
| 32 | 276861 |
| 33 | 304224 |
| 34 | 333333 |
| 35 | 364242 |
| 36 | 397005 |