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) |
|---|---|
| 1 | 1 |
| 2 | 4 |
| 3 | 10 |
| 4 | 21 |
| 5 | 39 |
| 6 | 68 |
| 7 | 112 |
| 8 | 178 |
| 9 | 274 |
| 10 | 412 |
| 11 | 606 |
| 12 | 877 |
| 13 | 1249 |
| 14 | 1756 |
| 15 | 2439 |
| 16 | 3353 |
| 17 | 4564 |
| 18 | 6160 |
| 19 | 8246 |
| 20 | 10959 |
| 21 | 14464 |
| 22 | 18971 |
| 23 | 24733 |
| 24 | 32070 |
| 25 | 41365 |
| 26 | 53096 |
| 27 | 67837 |
| 28 | 86296 |
| 29 | 109320 |
| 30 | 137948 |