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 | 1 |
| 3 | 7 |
| 4 | 16 |
| 5 | 35 |
| 6 | 73 |
| 7 | 170 |
| 8 | 357 |
| 9 | 799 |
| 10 | 1583 |
| 11 | 3159 |
| 12 | 6395 |
| 13 | 12669 |
| 14 | 24663 |
| 15 | 49001 |
| 16 | 92907 |
| 17 | 176482 |
| 18 | 340322 |
| 19 | 637803 |
| 20 | 1189953 |
| 21 | 2241558 |
| 22 | 4156837 |
| 23 | 7629834 |
| 24 | 14120680 |
| 25 | 25810341 |
| 26 | 47076266 |
| 27 | 85790799 |
| 28 | 155030395 |
| 29 | 279010877 |
| 30 | 505264895 |
| 31 | 902632836 |
| 32 | 1611104709 |
| 33 | 2880345715 |