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 | 14 |
| 2 | 196 |
| 3 | 546 |
| 4 | 3141 |
| 5 | 11284 |
| 6 | 26866 |
| 7 | 98224 |
| 8 | 357356 |
| 9 | 1032000 |
| 10 | 3365824 |
| 11 | 11680176 |
| 12 | 36617616 |
| 13 | 117235264 |
| 14 | 392397376 |
| 15 | 1266731200 |
| 16 | 4070802944 |
| 17 | 13377245184 |
| 18 | 43530557824 |
| 19 | 140684544000 |
| 20 | 458843940864 |
| 21 | 1494645999616 |
| 22 | 4847677870336 |