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 | 28 |
| 2 | 784 |
| 3 | 1488 |
| 4 | 4200 |
| 5 | 8892 |
| 6 | 24952 |
| 7 | 51696 |
| 8 | 136490 |
| 9 | 313524 |
| 10 | 741944 |
| 11 | 1781472 |
| 12 | 4256398 |
| 13 | 10168008 |
| 14 | 23945116 |
| 15 | 57760744 |
| 16 | 138028240 |
| 17 | 325742600 |
| 18 | 781955124 |
| 19 | 1868173840 |
| 20 | 4441180174 |
| 21 | 10581963516 |
| 22 | 25315989248 |
| 23 | 60356380176 |
| 24 | 143569382950 |