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 | 1 |
| 1 | 3 |
| 2 | 4 |
| 3 | 15 |
| 4 | 16 |
| 5 | 52 |
| 6 | 77 |
| 7 | 184 |
| 8 | 256 |
| 9 | 716 |
| 10 | 1045 |
| 11 | 2400 |
| 12 | 4320 |
| 13 | 9024 |
| 14 | 16524 |
| 15 | 35439 |
| 16 | 65536 |
| 17 | 135424 |
| 18 | 264928 |
| 19 | 534016 |
| 20 | 1048856 |
| 21 | 2124523 |
| 22 | 4196944 |
| 23 | 8435712 |
| 24 | 16792576 |
| 25 | 33658512 |
| 26 | 67118016 |
| 27 | 134478584 |
| 28 | 268435513 |
| 29 | 537346048 |
| 30 | 1073876144 |
| 31 | 2148499456 |
| 32 | 4294967296 |
| 33 | 8592337520 |
| 34 | 17179956224 |
| 35 | 34364358760 |