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 | 16 |
| 3 | 22 |
| 4 | 34 |
| 5 | 108 |
| 6 | 121 |
| 7 | 187 |
| 8 | 232 |
| 9 | 289 |
| 10 | 300 |
| 11 | 372 |
| 12 | 2230 |
| 13 | 4322 |
| 14 | 8882 |
| 15 | 23771 |
| 16 | 36737 |
| 17 | 48851 |
| 18 | 50946 |
| 19 | 67650 |
| 20 | 75497 |
| 21 | 424689 |
| 22 | 482998 |
| 23 | 581765 |
| 24 | 4669921 |
| 25 | 7374225 |
| 26 | 9597001 |
| 27 | 19722481 |
| 28 | 110714642 |
| 29 | 416101557 |
| 30 | 1478286411 |
| 31 | 1773582750 |