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 | 5 |
| 2 | 9 |
| 3 | 13 |
| 4 | 23 |
| 5 | 35 |
| 6 | 59 |
| 7 | 93 |
| 8 | 153 |
| 9 | 245 |
| 10 | 399 |
| 11 | 643 |
| 12 | 1043 |
| 13 | 1685 |
| 14 | 2729 |
| 15 | 4413 |
| 16 | 7143 |
| 17 | 11555 |
| 18 | 18699 |
| 19 | 30253 |
| 20 | 48953 |
| 21 | 79205 |
| 22 | 128159 |
| 23 | 207363 |
| 24 | 335523 |
| 25 | 542885 |
| 26 | 878409 |
| 27 | 1421293 |
| 28 | 2299703 |
| 29 | 3720995 |
| 30 | 6020699 |
| 31 | 9741693 |
| 32 | 15762393 |
| 33 | 25504085 |
| 34 | 41266479 |
| 35 | 66770563 |