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) |
|---|---|
| 1 | 2 |
| 2 | 3 |
| 3 | 5 |
| 4 | 8 |
| 5 | 16 |
| 6 | 38 |
| 7 | 101 |
| 8 | 284 |
| 9 | 852 |
| 10 | 2694 |
| 11 | 8935 |
| 12 | 30952 |
| 13 | 111598 |
| 14 | 417560 |
| 15 | 1617204 |
| 16 | 6468816 |
| 17 | 26671611 |
| 18 | 113158064 |
| 19 | 493244565 |
| 20 | 2205856753 |
| 21 | 10108505545 |
| 22 | 47413093714 |
| 23 | 227385209453 |
| 24 | 1113955476429 |
| 25 | 5569777382146 |
| 26 | 28400403557929 |