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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 8 |
| 2 | 97 |
| 3 | 1400 |
| 4 | 22243 |
| 5 | 375584 |
| 6 | 6614508 |
| 7 | 120136984 |
| 8 | 2234022775 |
| 9 | 42322629960 |
| 10 | 813939319697 |
| 11 | 15849232257824 |
| 12 | 311858145053076 |
| 13 | 6191083938051840 |
| 14 | 123852349440862504 |
| 15 | 2494251111318893400 |
| 16 | 50526944132627936127 |
| 17 | 1028872756710478785560 |
[1,8,97,1400,22243,375584,6614508,120136984, 2234022775,42322629960,813939319697, 15849232257824,311858145053076,6191083938051840, 123852349440862504,2494251111318893400, 50526944132627936127,1028872756710478785560] |