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 | 2 |
| 2 | 3 |
| 3 | 7 |
| 4 | 13 |
| 5 | 29 |
| 6 | 53 |
| 7 | 103 |
| 8 | 199 |
| 9 | 389 |
| 10 | 751 |
| 11 | 1447 |
| 12 | 2789 |
| 13 | 5381 |
| 14 | 10369 |
| 15 | 19991 |
| 16 | 38543 |
| 17 | 74287 |
| 18 | 143197 |
| 19 | 276019 |
| 20 | 532061 |
| 21 | 1025579 |
| 22 | 1976857 |
| 23 | 3810517 |
| 24 | 7345031 |
| 25 | 14158009 |
| 26 | 27290429 |
| 27 | 52604017 |
| 28 | 101397487 |
| 29 | 195449957 |
| 30 | 376741891 |
| 31 | 726193373 |
| 32 | 1399782719 |
| 33 | 2698167947 |
| 34 | 5200885961 |