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 | 1 |
| 1 | 1 |
| 2 | 1 |
| 3 | 2 |
| 4 | 3 |
| 5 | 8 |
| 6 | 16 |
| 7 | 41 |
| 8 | 98 |
| 9 | 250 |
| 10 | 631 |
| 11 | 1646 |
| 12 | 4285 |
| 13 | 11338 |
| 14 | 30135 |
| 15 | 80791 |
| 16 | 217673 |
| 17 | 590010 |
| 18 | 1606188 |
| 19 | 4392219 |
| 20 | 12055393 |
| 21 | 33206321 |
| 22 | 91752211 |
| 23 | 254261363 |
| 24 | 706465999 |
| 25 | 1967743066 |
| 26 | 5493195530 |
| 27 | 15367129299 |
| 28 | 43073007846 |
| 29 | 120949992543 |
| 30 | 340206026166 |
| 31 | 958444631917 |