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 | 4 |
| 4 | 7 |
| 5 | 9 |
| 6 | 15 |
| 7 | 22 |
| 8 | 43 |
| 9 | 79 |
| 10 | 127 |
| 11 | 175 |
| 12 | 343 |
| 13 | 511 |
| 14 | 851 |
| 15 | 1571 |
| 16 | 3141 |
| 17 | 4397 |
| 18 | 8765 |
| 19 | 13147 |
| 20 | 25243 |
| 21 | 46843 |
| 22 | 76795 |
| 23 | 115171 |
| 24 | 230299 |
| 25 | 454939 |
| 26 | 758203 |
| 27 | 1516363 |
| 28 | 2916079 |
| 29 | 4356079 |
| 30 | 8676079 |
| 31 | 12132079 |
| 32 | 24264157 |
| 33 | 45000157 |
| 34 | 73800253 |
| 35 | 145685053 |
| 36 | 291369853 |
| 37 | 437054653 |
| 38 | 728424421 |