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 | 6 |
| 3 | 11 |
| 4 | 106 |
| 5 | 201 |
| 6 | 2022 |
| 7 | 3843 |
| 8 | 38794 |
| 9 | 73745 |
| 10 | 744646 |
| 11 | 1415547 |
| 12 | 14293930 |
| 13 | 27172313 |
| 14 | 274381478 |
| 15 | 521590643 |
| 16 | 5266936010 |
| 17 | 10012281377 |
| 18 | 101102361990 |
| 19 | 192192442603 |
| 20 | 1940727511786 |
| 21 | 3689262580969 |
| 22 | 37253563629926 |
| 23 | 70817864678883 |
| 24 | 715107089849866 |