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 | 1 |
| 2 | 2 |
| 3 | 70 |
| 4 | 106 |
| 5 | 330 |
| 6 | 366 |
| 7 | 370 |
| 8 | 546 |
| 9 | 836 |
| 10 | 1370 |
| 11 | 1870 |
| 12 | 2126 |
| 13 | 2616 |
| 14 | 4240 |
| 15 | 4836 |
| 16 | 4956 |
| 17 | 9520 |
| 18 | 10896 |
| 19 | 11446 |
| 20 | 14250 |
| 21 | 15836 |
| 22 | 16170 |
| 23 | 18040 |
| 24 | 18566 |
| 25 | 26516 |
| 26 | 28676 |
| 27 | 37060 |
| 28 | 40546 |
| 29 | 40760 |
| 30 | 46850 |
| 31 | 52060 |
| 32 | 57176 |
| 33 | 67726 |
| 34 | 74776 |
| 35 | 78460 |
| 36 | 90810 |
| 37 | 98216 |
| 38 | 108870 |
| 39 | 115400 |
| 40 | 115990 |
| 41 | 123930 |