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 | 3 |
| 3 | 7 |
| 4 | 15 |
| 5 | 26 |
| 6 | 57 |
| 7 | 106 |
| 8 | 207 |
| 9 | 403 |
| 10 | 788 |
| 11 | 1530 |
| 12 | 2985 |
| 13 | 5812 |
| 14 | 11322 |
| 15 | 22052 |
| 16 | 42959 |
| 17 | 83675 |
| 18 | 162993 |
| 19 | 317491 |
| 20 | 618440 |
| 21 | 1204651 |
| 22 | 2346534 |
| 23 | 4570791 |
| 24 | 8903409 |
| 25 | 17342876 |
| 26 | 33782050 |
| 27 | 65803777 |
| 28 | 128178646 |
| 29 | 249678140 |
| 30 | 486346022 |
| 31 | 947349461 |
| 32 | 1845334319 |
| 33 | 3594511719 |
| 34 | 7001720167 |