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) |
|---|---|
| 0 | 0 |
| 1 | 66 |
| 2 | 868 |
| 3 | 5586 |
| 4 | 24570 |
| 5 | 84630 |
| 6 | 245322 |
| 7 | 625086 |
| 8 | 1440582 |
| 9 | 3063060 |
| 10 | 6096090 |
| 11 | 11479468 |
| 12 | 20624604 |
| 13 | 35587188 |
| 14 | 59283420 |
| 15 | 95756580 |
| 16 | 150501204 |
| 17 | 230852622 |
| 18 | 346450104 |
| 19 | 509782350 |
| 20 | 736824550 |
| 21 | 1047776730 |
| 22 | 1467913590 |
| 23 | 2028556530 |
| 24 | 2768179050 |
| 25 | 3733657200 |
| 26 | 4981677246 |
| 27 | 6580313208 |