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 | 4 |
| 2 | 55 |
| 3 | 144 |
| 4 | 145 |
| 5 | 511 |
| 6 | 2943 |
| 7 | 6950 |
| 8 | 7734 |
| 9 | 9470 |
| 10 | 9750 |
| 11 | 15630 |
| 12 | 15631 |
| 13 | 35034 |
| 14 | 35464 |
| 15 | 41590 |
| 16 | 41986 |
| 17 | 64735 |
| 18 | 68523 |
| 19 | 68870 |
| 20 | 77510 |
| 21 | 81150 |
| 22 | 90958 |
| 23 | 106063 |
| 24 | 118264 |
| 25 | 119043 |
| 26 | 135970 |
| 27 | 139403 |
| 28 | 163188 |
| 29 | 164862 |
| 30 | 164863 |
| 31 | 171346 |
| 32 | 181510 |
| 33 | 200759 |
| 34 | 202761 |
| 35 | 202762 |
| 36 | 208024 |
| 37 | 209230 |
| 38 | 209586 |