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 | 7 |
| 3 | 13 |
| 4 | 21 |
| 5 | 27 |
| 6 | 53 |
| 7 | 99 |
| 8 | 197 |
| 9 | 371 |
| 10 | 713 |
| 11 | 1365 |
| 12 | 2645 |
| 13 | 5105 |
| 14 | 9857 |
| 15 | 19079 |
| 16 | 36861 |
| 17 | 71379 |
| 18 | 138165 |
| 19 | 267465 |
| 20 | 518201 |
| 21 | 1003521 |
| 22 | 1944649 |
| 23 | 3767939 |
| 24 | 7302057 |
| 25 | 14153291 |
| 26 | 27432325 |
| 27 | 53179669 |
| 28 | 103092661 |
| 29 | 199871009 |
| 30 | 387518385 |
| 31 | 751360183 |
| 32 | 1456897269 |
| 33 | 2824988675 |