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 | 2 |
| 2 | 3 |
| 3 | 6 |
| 4 | 8 |
| 5 | 15 |
| 6 | 30 |
| 7 | 52 |
| 8 | 101 |
| 9 | 202 |
| 10 | 376 |
| 11 | 740 |
| 12 | 1480 |
| 13 | 2840 |
| 14 | 5625 |
| 15 | 11250 |
| 16 | 21928 |
| 17 | 43583 |
| 18 | 87166 |
| 19 | 171420 |
| 20 | 341412 |
| 21 | 682824 |
| 22 | 1350144 |
| 23 | 2692536 |
| 24 | 5385072 |
| 25 | 10684872 |
| 26 | 21326481 |
| 27 | 42652962 |
| 28 | 84825224 |
| 29 | 169403773 |
| 30 | 338807546 |
| 31 | 674852332 |
| 32 | 1348273949 |