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 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 2 |
| 5 | 4 |
| 6 | 8 |
| 7 | 17 |
| 8 | 36 |
| 9 | 79 |
| 10 | 175 |
| 11 | 395 |
| 12 | 899 |
| 13 | 2074 |
| 14 | 4818 |
| 15 | 11291 |
| 16 | 26626 |
| 17 | 63184 |
| 18 | 150691 |
| 19 | 361141 |
| 20 | 869057 |
| 21 | 2099386 |
| 22 | 5088769 |
| 23 | 12373721 |
| 24 | 30173307 |
| 25 | 73771453 |
| 26 | 180800699 |
| 27 | 444101658 |
| 28 | 1093104961 |
| 29 | 2695730992 |
| 30 | 6659914175 |
| 31 | 16481146479 |
| 32 | 40849449618 |