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 | 19 |
| 2 | 361 |
| 3 | 1095 |
| 4 | 3106 |
| 5 | 10207 |
| 6 | 33631 |
| 7 | 119278 |
| 8 | 430317 |
| 9 | 1618497 |
| 10 | 6185552 |
| 11 | 24218961 |
| 12 | 95923447 |
| 13 | 385262430 |
| 14 | 1559000011 |
| 15 | 6359706157 |
| 16 | 26067392066 |
| 17 | 107355218191 |
| 18 | 443485735669 |
| 19 | 1837400471598 |
| 20 | 7628072692243 |
| 21 | 31728400910931 |
| 22 | 132160666103750 |