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 | 3 |
| 2 | 5 |
| 3 | 6 |
| 4 | 13 |
| 5 | 18 |
| 6 | 44 |
| 7 | 84 |
| 8 | 101 |
| 9 | 134 |
| 10 | 183 |
| 11 | 534 |
| 12 | 1113 |
| 13 | 1912 |
| 14 | 3103 |
| 15 | 3687 |
| 16 | 9758 |
| 17 | 9831 |
| 18 | 21942 |
| 19 | 31054 |
| 20 | 63752 |
| 21 | 184914 |
| 22 | 309601 |
| 23 | 855162 |
| 24 | 1293236 |
| 25 | 2577435 |
| 26 | 5579862 |
| 27 | 19224634 |
| 28 | 22991430 |
| 29 | 43953399 |
| 30 | 50920966 |