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 | 0 |
| 2 | 3 |
| 3 | 5 |
| 4 | 32 |
| 5 | 203 |
| 6 | 333 |
| 7 | 2112 |
| 8 | 13395 |
| 9 | 21973 |
| 10 | 139360 |
| 11 | 883867 |
| 12 | 1449885 |
| 13 | 9195648 |
| 14 | 58321827 |
| 15 | 95670437 |
| 16 | 606773408 |
| 17 | 3848356715 |
| 18 | 6312798957 |
| 19 | 40037849280 |
| 20 | 253933221363 |
| 21 | 416549060725 |
| 22 | 2641891279072 |
| 23 | 16755744253243 |
| 24 | 27485925208893 |
| 25 | 174324786569472 |
| 26 | 1105625187492675 |