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 | 10 |
| 3 | 21 |
| 4 | 44 |
| 5 | 93 |
| 6 | 118 |
| 7 | 170 |
| 8 | 320 |
| 9 | 548 |
| 10 | 3596 |
| 11 | 3620 |
| 12 | 4772 |
| 13 | 5564 |
| 14 | 18260 |
| 15 | 33051 |
| 16 | 256425 |
| 17 | 403700 |
| 18 | 1071129 |
| 19 | 1790160 |
| 20 | 2318180 |
| 21 | 3968852 |
| 22 | 4027375 |
| 23 | 10001319 |
| 24 | 11270012 |
| 25 | 12048740 |
| 26 | 13358121 |
| 27 | 31741593 |
| 28 | 46271673 |
| 29 | 56149161 |
| 30 | 4344134553 |