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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 6 |
| 3 | 18 |
| 4 | 9 |
| 5 | 1 |
| 6 | 36 |
| 7 | 540 |
| 8 | 1242 |
| 9 | 882 |
| 10 | 243 |
| 11 | 27 |
| 12 | 1 |
| 13 | 216 |
| 14 | 13608 |
| 15 | 94284 |
| 16 | 186876 |
| 17 | 149580 |
| 18 | 56808 |
| 19 | 11025 |
| 20 | 1107 |
| 21 | 54 |
| 22 | 1 |
| 23 | 1296 |
| 24 | 330480 |
| 25 | 6148872 |
| 26 | 28245672 |
| 27 | 49658508 |
| 28 | 41392620 |
| 29 | 18428400 |
| 30 | 4691412 |
| 31 | 706833 |
| 32 | 63375 |
| 33 | 3285 |
| 34 | 90 |
| 35 | 1 |
| 36 | 7776 |
| 37 | 7954848 |
| 38 | 380841264 |
| 39 | 3762380016 |
| 40 | 13062960720 |
[1,6,18,9,1,36,540,1242,882,243,27,1,216,13608, 94284,186876,149580,56808,11025,1107,54,1,1296, 330480,6148872,28245672,49658508,41392620, 18428400,4691412,706833,63375,3285,90,1,7776, 7954848,380841264,3762380016,13062960720] |