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 | 64 |
| 2 | 610 |
| 3 | 2552 |
| 4 | 7548 |
| 5 | 18888 |
| 6 | 43284 |
| 7 | 94320 |
| 8 | 199299 |
| 9 | 412962 |
| 10 | 844943 |
| 11 | 1714680 |
| 12 | 3461238 |
| 13 | 6962956 |
| 14 | 13976742 |
| 15 | 28016664 |
| 16 | 56111133 |
| 17 | 112317270 |
| 18 | 224749641 |
| 19 | 449637728 |
| 20 | 899440872 |
| 21 | 1799078160 |
| 22 | 3598388200 |
| 23 | 7197048672 |
| 24 | 14394415431 |
| 25 | 28789200714 |