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| n | a(n) |
|---|---|
| 1 | 15 |
| 2 | 28 |
| 3 | 28 |
| 4 | 66 |
| 5 | 104 |
| 6 | 66 |
| 7 | 144 |
| 8 | 408 |
| 9 | 408 |
| 10 | 144 |
| 11 | 336 |
| 12 | 1616 |
| 13 | 2988 |
| 14 | 1616 |
| 15 | 336 |
| 16 | 752 |
| 17 | 6432 |
| 18 | 20640 |
| 19 | 20640 |
| 20 | 6432 |
| 21 | 752 |
| 22 | 1752 |
| 23 | 25664 |
| 24 | 149120 |
| 25 | 262368 |
| 26 | 149120 |
| 27 | 25664 |
| 28 | 1752 |
| 29 | 3936 |
| 30 | 102528 |
| 31 | 1050624 |
| 32 | 3364544 |
| 33 | 3364544 |
| 34 | 1050624 |
| 35 | 102528 |
| 36 | 3936 |
| 37 | 9168 |
| 38 | 409856 |
| 39 | 7557696 |
[15,28,28,66,104,66,144,408,408,144,336,1616,2988, 1616,336,752,6432,20640,20640,6432,752,1752,25664, 149120,262368,149120,25664,1752,3936,102528, 1050624,3364544,3364544,1050624,102528,3936,9168, 409856,7557696] |