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| n | a(n) |
|---|---|
| 1 | 372 |
| 2 | 1856 |
| 3 | 9052 |
| 4 | 45648 |
| 5 | 235538 |
| 6 | 1215616 |
| 7 | 6233356 |
| 8 | 31868448 |
| 9 | 163014678 |
| 10 | 834763824 |
| 11 | 4276077566 |
| 12 | 21900661172 |
| 13 | 112149148911 |
| 14 | 574278200480 |
| 15 | 2940790043388 |
| 16 | 15059692639376 |
| 17 | 77120252989206 |
| 18 | 394927990211792 |
| 19 | 2022395235481866 |
[372,1856,9052,45648,235538,1215616,6233356, 31868448,163014678,834763824,4276077566, 21900661172,112149148911,574278200480, 2940790043388,15059692639376,77120252989206, 394927990211792,2022395235481866] |