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 | 5 |
| 2 | 17 |
| 3 | 36 |
| 4 | 80 |
| 5 | 164 |
| 6 | 300 |
| 7 | 575 |
| 8 | 1020 |
| 9 | 1884 |
| 10 | 3426 |
| 11 | 5921 |
| 12 | 10568 |
| 13 | 18697 |
| 14 | 31850 |
| 15 | 55716 |
| 16 | 94332 |
| 17 | 163579 |
| 18 | 282388 |
| 19 | 474625 |
| 20 | 814328 |
| 21 | 1363979 |
| 22 | 2328358 |
| 23 | 3963781 |
| 24 | 6609951 |
| 25 | 11209355 |
| 26 | 18969158 |
| 27 | 31524783 |
| 28 | 53186480 |
| 29 | 88235842 |
| 30 | 148471479 |
| 31 | 249459365 |