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 | 9 |
| 2 | 12 |
| 3 | 21 |
| 4 | 33 |
| 5 | 54 |
| 6 | 87 |
| 7 | 141 |
| 8 | 228 |
| 9 | 369 |
| 10 | 597 |
| 11 | 966 |
| 12 | 1563 |
| 13 | 2529 |
| 14 | 4092 |
| 15 | 6621 |
| 16 | 10713 |
| 17 | 17334 |
| 18 | 28047 |
| 19 | 45381 |
| 20 | 73428 |
| 21 | 118809 |
| 22 | 192237 |
| 23 | 311046 |
| 24 | 503283 |
| 25 | 814329 |
| 26 | 1317612 |
| 27 | 2131941 |
| 28 | 3449553 |
| 29 | 5581494 |
| 30 | 9031047 |
| 31 | 14612541 |
| 32 | 23643588 |
| 33 | 38256129 |
| 34 | 61899717 |
| 35 | 100155846 |
| 36 | 162055563 |
| 37 | 262211409 |