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 | 3 |
| 2 | 75 |
| 3 | 147 |
| 4 | 363 |
| 5 | 507 |
| 6 | 867 |
| 7 | 1083 |
| 8 | 1587 |
| 9 | 1875 |
| 10 | 2523 |
| 11 | 2883 |
| 12 | 3675 |
| 13 | 4107 |
| 14 | 5043 |
| 15 | 5547 |
| 16 | 6627 |
| 17 | 7203 |
| 18 | 8427 |
| 19 | 9075 |
| 20 | 10443 |
| 21 | 11163 |
| 22 | 12675 |
| 23 | 13467 |
| 24 | 15123 |
| 25 | 15987 |
| 26 | 17787 |
| 27 | 18723 |
| 28 | 20667 |
| 29 | 21675 |
| 30 | 23763 |
| 31 | 24843 |
| 32 | 27075 |
| 33 | 28227 |
| 34 | 30603 |
| 35 | 31827 |
| 36 | 34347 |
| 37 | 35643 |
| 38 | 38307 |
| 39 | 39675 |
| 40 | 42483 |
| 41 | 43923 |