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 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 2 |
| 5 | 4 |
| 6 | 8 |
| 7 | 16 |
| 8 | 34 |
| 9 | 72 |
| 10 | 157 |
| 11 | 343 |
| 12 | 766 |
| 13 | 1718 |
| 14 | 3899 |
| 15 | 8898 |
| 16 | 20475 |
| 17 | 47321 |
| 18 | 110024 |
| 19 | 256791 |
| 20 | 601991 |
| 21 | 1415768 |
| 22 | 3340847 |
| 23 | 7904700 |
| 24 | 18752943 |
| 25 | 44588803 |
| 26 | 106247120 |
| 27 | 253644319 |
| 28 | 606603025 |
| 29 | 1453029516 |
| 30 | 3485707007 |
| 31 | 8373273835 |
| 32 | 20139498217 |
| 33 | 48496079939 |
| 34 | 116905715114 |
| 35 | 282098869730 |