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 | 147 |
| 2 | 331 |
| 3 | 789 |
| 4 | 1905 |
| 5 | 4429 |
| 6 | 10125 |
| 7 | 23463 |
| 8 | 55246 |
| 9 | 129480 |
| 10 | 300432 |
| 11 | 696375 |
| 12 | 1623876 |
| 13 | 3795126 |
| 14 | 8845445 |
| 15 | 20569653 |
| 16 | 47880261 |
| 17 | 111630444 |
| 18 | 260248590 |
| 19 | 606129714 |
| 20 | 1411326056 |
| 21 | 3287784315 |
| 22 | 7661560197 |
| 23 | 17850285244 |
| 24 | 41578206276 |
| 25 | 96850762992 |