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 | 22 |
| 4 | 36 |
| 5 | 104 |
| 6 | 382 |
| 7 | 712 |
| 8 | 1936 |
| 9 | 4320 |
| 10 | 6824 |
| 11 | 15012 |
| 12 | 46992 |
| 13 | 79344 |
| 14 | 183000 |
| 15 | 421008 |
| 16 | 480000 |
| 17 | 1453784 |
| 18 | 4658784 |
| 19 | 8877792 |
| 20 | 20958480 |
| 21 | 38887680 |
| 22 | 61284600 |
| 23 | 110250264 |
| 24 | 388201176 |
| 25 | 719023536 |
| 26 | 1734432480 |
| 27 | 2889658368 |
| 28 | 4745378304 |
| 29 | 10350643968 |
| 30 | 32212254718 |
| 31 | 66251144568 |