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 | 2 |
| 3 | 3 |
| 4 | 7 |
| 5 | 12 |
| 6 | 29 |
| 7 | 54 |
| 8 | 130 |
| 9 | 258 |
| 10 | 616 |
| 11 | 1274 |
| 12 | 3030 |
| 13 | 6458 |
| 14 | 15287 |
| 15 | 33335 |
| 16 | 78694 |
| 17 | 174587 |
| 18 | 411469 |
| 19 | 925246 |
| 20 | 2179010 |
| 21 | 4952389 |
| 22 | 11662221 |
| 23 | 26733827 |
| 24 | 62980863 |
| 25 | 145385388 |
| 26 | 342766624 |
| 27 | 795810810 |
| 28 | 1878109984 |
| 29 | 4381423357 |
| 30 | 10352044123 |
| 31 | 24247955489 |
| 32 | 57362089607 |