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) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 2 |
| 3 | 9 |
| 4 | 16 |
| 5 | 55 |
| 6 | 96 |
| 7 | 294 |
| 8 | 512 |
| 9 | 1467 |
| 10 | 2560 |
| 11 | 7018 |
| 12 | 12288 |
| 13 | 32630 |
| 14 | 57344 |
| 15 | 148620 |
| 16 | 262144 |
| 17 | 666451 |
| 18 | 1179648 |
| 19 | 2952258 |
| 20 | 5242880 |
| 21 | 12949986 |
| 22 | 23068672 |
| 23 | 56346964 |
| 24 | 100663296 |
| 25 | 243517150 |
| 26 | 436207616 |
| 27 | 1046377764 |
| 28 | 1879048192 |
| 29 | 4474004812 |
| 30 | 8053063680 |
| 31 | 19047319832 |
| 32 | 34359738368 |