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 | 1 |
| 1 | 2 |
| 2 | 4 |
| 3 | 10 |
| 4 | 24 |
| 5 | 60 |
| 6 | 152 |
| 7 | 388 |
| 8 | 1000 |
| 9 | 2592 |
| 10 | 6752 |
| 11 | 17664 |
| 12 | 46368 |
| 13 | 122080 |
| 14 | 322240 |
| 15 | 852464 |
| 16 | 2259552 |
| 17 | 5999552 |
| 18 | 15954560 |
| 19 | 42486592 |
| 20 | 113282048 |
| 21 | 302386304 |
| 22 | 807999744 |
| 23 | 2161077120 |
| 24 | 5785032448 |
| 25 | 15498450944 |
| 26 | 41551965184 |
| 27 | 111478804480 |
| 28 | 299274439680 |
| 29 | 803905119232 |
| 30 | 2160632498176 |
| 31 | 5810087371520 |