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| n | a(n) |
|---|---|
| 1 | 907 |
| 2 | 13810 |
| 3 | 200740 |
| 4 | 3006936 |
| 5 | 44555528 |
| 6 | 664592224 |
| 7 | 9887498224 |
| 8 | 147292687568 |
| 9 | 2193102920288 |
| 10 | 32661849908016 |
| 11 | 486389502506976 |
| 12 | 7243465635640272 |
| 13 | 107870373848471680 |
| 14 | 1606428416440365872 |
| 15 | 23923215185921918560 |
[907,13810,200740,3006936,44555528,664592224, 9887498224,147292687568,2193102920288, 32661849908016,486389502506976,7243465635640272, 107870373848471680,1606428416440365872, 23923215185921918560] |