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 | 12 |
| 3 | 15 |
| 4 | 37 |
| 5 | 44 |
| 6 | 77 |
| 7 | 92 |
| 8 | 136 |
| 9 | 167 |
| 10 | 222 |
| 11 | 285 |
| 12 | 351 |
| 13 | 478 |
| 14 | 555 |
| 15 | 810 |
| 16 | 898 |
| 17 | 1409 |
| 18 | 1508 |
| 19 | 2531 |
| 20 | 2641 |
| 21 | 4688 |
| 22 | 4809 |
| 23 | 8904 |
| 24 | 9036 |
| 25 | 17227 |
| 26 | 17370 |
| 27 | 33753 |
| 28 | 33907 |
| 29 | 66674 |
| 30 | 66839 |
| 31 | 132374 |
| 32 | 132550 |
| 33 | 263621 |
| 34 | 263808 |
| 35 | 525951 |
| 36 | 526149 |
| 37 | 1050436 |
| 38 | 1050645 |
| 39 | 2099220 |