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 | 9 |
| 3 | 27 |
| 4 | 59 |
| 5 | 109 |
| 6 | 181 |
| 7 | 279 |
| 8 | 407 |
| 9 | 569 |
| 10 | 769 |
| 11 | 1011 |
| 12 | 1299 |
| 13 | 1637 |
| 14 | 2029 |
| 15 | 2479 |
| 16 | 2991 |
| 17 | 3569 |
| 18 | 4217 |
| 19 | 4939 |
| 20 | 5739 |
| 21 | 6621 |
| 22 | 7589 |
| 23 | 8647 |
| 24 | 9799 |
| 25 | 11049 |
| 26 | 12401 |
| 27 | 13859 |
| 28 | 15427 |
| 29 | 17109 |
| 30 | 18909 |
| 31 | 20831 |
| 32 | 22879 |
| 33 | 25057 |
| 34 | 27369 |
| 35 | 29819 |
| 36 | 32411 |
| 37 | 35149 |
| 38 | 38037 |
| 39 | 41079 |
| 40 | 44279 |
| 41 | 47641 |