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 | 0 |
| 1 | 21 |
| 2 | 21 |
| 3 | 42 |
| 4 | 63 |
| 5 | 105 |
| 6 | 168 |
| 7 | 273 |
| 8 | 441 |
| 9 | 714 |
| 10 | 1155 |
| 11 | 1869 |
| 12 | 3024 |
| 13 | 4893 |
| 14 | 7917 |
| 15 | 12810 |
| 16 | 20727 |
| 17 | 33537 |
| 18 | 54264 |
| 19 | 87801 |
| 20 | 142065 |
| 21 | 229866 |
| 22 | 371931 |
| 23 | 601797 |
| 24 | 973728 |
| 25 | 1575525 |
| 26 | 2549253 |
| 27 | 4124778 |
| 28 | 6674031 |
| 29 | 10798809 |
| 30 | 17472840 |
| 31 | 28271649 |
| 32 | 45744489 |
| 33 | 74016138 |
| 34 | 119760627 |
| 35 | 193776765 |