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 | 9 |
| 2 | 39 |
| 3 | 165 |
| 4 | 219 |
| 5 | 249 |
| 6 | 309 |
| 7 | 414 |
| 8 | 534 |
| 9 | 639 |
| 10 | 765 |
| 11 | 1044 |
| 12 | 1065 |
| 13 | 1089 |
| 14 | 1155 |
| 15 | 1395 |
| 16 | 1509 |
| 17 | 1530 |
| 18 | 1554 |
| 19 | 1590 |
| 20 | 1884 |
| 21 | 2079 |
| 22 | 2115 |
| 23 | 2130 |
| 24 | 2310 |
| 25 | 2319 |
| 26 | 2430 |
| 27 | 2475 |
| 28 | 2709 |
| 29 | 2874 |
| 30 | 3060 |
| 31 | 3105 |
| 32 | 3354 |
| 33 | 3420 |
| 34 | 3684 |
| 35 | 3705 |
| 36 | 3780 |
| 37 | 3819 |
| 38 | 4104 |
| 39 | 4314 |
| 40 | 4554 |
| 41 | 4599 |
| 42 | 4659 |
| 43 | 4869 |
| 44 | 5160 |