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 | 12 |
| 3 | 18 |
| 4 | 26 |
| 5 | 106 |
| 6 | 164 |
| 7 | 246 |
| 8 | 956 |
| 9 | 2554 |
| 10 | 3350 |
| 11 | 6496 |
| 12 | 8706 |
| 13 | 9008 |
| 14 | 15398 |
| 15 | 15490 |
| 16 | 20408 |
| 17 | 39240 |
| 18 | 41060 |
| 19 | 41842 |
| 20 | 58358 |
| 21 | 60346 |
| 22 | 82214 |
| 23 | 134972 |
| 24 | 194014 |
| 25 | 344204 |
| 26 | 587712 |
| 27 | 778070 |