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 | 3 |
| 1 | 11 |
| 2 | 27 |
| 3 | 56 |
| 4 | 106 |
| 5 | 190 |
| 6 | 329 |
| 7 | 557 |
| 8 | 929 |
| 9 | 1534 |
| 10 | 2516 |
| 11 | 4108 |
| 12 | 6687 |
| 13 | 10863 |
| 14 | 17623 |
| 15 | 28564 |
| 16 | 46270 |
| 17 | 74922 |
| 18 | 121285 |
| 19 | 196305 |
| 20 | 317693 |
| 21 | 514106 |
| 22 | 831912 |
| 23 | 1346136 |
| 24 | 2178171 |
| 25 | 3524435 |
| 26 | 5702739 |
| 27 | 9227312 |
| 28 | 14930194 |
| 29 | 24157654 |
| 30 | 39088001 |