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 | 2 |
| 2 | 3 |
| 3 | 5 |
| 4 | 7 |
| 5 | 11 |
| 6 | 19 |
| 7 | 29 |
| 8 | 53 |
| 9 | 87 |
| 10 | 151 |
| 11 | 267 |
| 12 | 461 |
| 13 | 811 |
| 14 | 1383 |
| 15 | 2357 |
| 16 | 4277 |
| 17 | 7499 |
| 18 | 14003 |
| 19 | 25931 |
| 20 | 44269 |
| 21 | 87773 |
| 22 | 152947 |
| 23 | 271563 |