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 | 2 |
| 3 | 4 |
| 4 | 6 |
| 5 | 8 |
| 6 | 16 |
| 7 | 18 |
| 8 | 30 |
| 9 | 32 |
| 10 | 64 |
| 11 | 128 |
| 12 | 210 |
| 13 | 256 |
| 14 | 450 |
| 15 | 512 |
| 16 | 1024 |
| 17 | 2048 |
| 18 | 2250 |
| 19 | 2310 |
| 20 | 4096 |
| 21 | 8192 |
| 22 | 16384 |
| 23 | 30030 |
| 24 | 32768 |
| 25 | 65536 |
| 26 | 131072 |
| 27 | 262144 |
| 28 | 510510 |
| 29 | 524288 |