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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 11 |
| 3 | 182 |
| 4 | 3542 |
| 5 | 76258 |
| 6 | 1753522 |
| 7 | 42269392 |
| 8 | 1055518634 |
| 9 | 27091380674 |
| 10 | 710781384782 |
| 11 | 18986685114964 |
| 12 | 514838929566304 |
| 13 | 14138508923416768 |
| 14 | 392518929926801888 |
| 15 | 11000540560168582016 |
| 16 | 310851652685562860378 |
| 17 | 8848249504532000817058 |
| 18 | 253498769515046174725606 |
[1,1,11,182,3542,76258,1753522,42269392, 1055518634,27091380674,710781384782, 18986685114964,514838929566304,14138508923416768, 392518929926801888,11000540560168582016, 310851652685562860378,8848249504532000817058, 253498769515046174725606] |