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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 36 |
| 2 | 738 |
| 3 | 11352 |
| 4 | 145926 |
| 5 | 1657656 |
| 6 | 17202900 |
| 7 | 166651056 |
| 8 | 1529421894 |
| 9 | 13438354072 |
| 10 | 113934017340 |
| 11 | 937605593808 |
| 12 | 7523844806556 |
| 13 | 59086320919344 |
| 14 | 455434002675432 |
| 15 | 3453696244883808 |
| 16 | 25817301841465926 |
| 17 | 190551351969051480 |
| 18 | 1390535665902059820 |
| 19 | 10044442002527721360 |
[1,36,738,11352,145926,1657656,17202900,166651056, 1529421894,13438354072,113934017340,937605593808, 7523844806556,59086320919344,455434002675432, 3453696244883808,25817301841465926, 190551351969051480,1390535665902059820, 10044442002527721360] |