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 | 2 |
| 4 | 3 |
| 5 | 7 |
| 6 | 15 |
| 7 | 34 |
| 8 | 79 |
| 9 | 190 |
| 10 | 457 |
| 11 | 1132 |
| 12 | 2823 |
| 13 | 7126 |
| 14 | 18136 |
| 15 | 46541 |
| 16 | 120103 |
| 17 | 312109 |
| 18 | 815012 |
| 19 | 2137755 |
| 20 | 5632399 |
| 21 | 14895684 |
| 22 | 39519502 |
| 23 | 105198371 |
| 24 | 280815067 |
| 25 | 751490363 |
| 26 | 2016142768 |
| 27 | 5420945437 |
| 28 | 14604580683 |
| 29 | 39425557103 |
| 30 | 106618273626 |
| 31 | 288792927325 |
| 32 | 783516425820 |