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 | 732 |
| 3 | 4392 |
| 4 | 18890 |
| 5 | 66532 |
| 6 | 205628 |
| 7 | 580664 |
| 8 | 1536814 |
| 9 | 3877300 |
| 10 | 9434784 |
| 11 | 22327496 |
| 12 | 51698178 |
| 13 | 117645348 |
| 14 | 263992580 |
| 15 | 585640568 |
| 16 | 1286898262 |
| 17 | 2805399156 |
| 18 | 6074441896 |
| 19 | 13076687560 |
| 20 | 28009586346 |
| 21 | 59732295204 |
| 22 | 126891641612 |
| 23 | 268638308152 |
| 24 | 566987715710 |