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 | 72 |
| 2 | 1240 |
| 3 | 7254 |
| 4 | 26850 |
| 5 | 75792 |
| 6 | 178834 |
| 7 | 372150 |
| 8 | 705270 |
| 9 | 1242888 |
| 10 | 2067650 |
| 11 | 3281874 |
| 12 | 5009232 |
| 13 | 7397868 |
| 14 | 10621792 |
| 15 | 14882672 |
| 16 | 20413220 |
| 17 | 27478160 |
| 18 | 36376230 |
| 19 | 47443518 |
| 20 | 61054528 |
| 21 | 77624122 |
| 22 | 97610834 |
| 23 | 121518006 |
| 24 | 149895400 |
| 25 | 183343046 |
| 26 | 222512226 |