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| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 2 |
| 3 | 6 |
| 4 | 10 |
| 5 | 4 |
| 6 | 30 |
| 7 | 62 |
| 8 | 40 |
| 9 | 8 |
| 10 | 270 |
| 11 | 618 |
| 12 | 484 |
| 13 | 152 |
| 14 | 16 |
| 15 | 4590 |
| 16 | 11046 |
| 17 | 9464 |
| 18 | 3552 |
| 19 | 576 |
| 20 | 32 |
| 21 | 151470 |
| 22 | 373698 |
| 23 | 334404 |
| 24 | 136144 |
| 25 | 26112 |
| 26 | 2208 |
| 27 | 64 |
| 28 | 9845550 |
| 29 | 24593310 |
| 30 | 22483656 |
| 31 | 9518168 |
| 32 | 1969568 |
| 33 | 195744 |
| 34 | 8576 |
| 35 | 128 |
| 36 | 1270075950 |
| 37 | 3192228090 |
| 38 | 2949578244 |
| 39 | 1272810984 |
[2,2,6,10,4,30,62,40,8,270,618,484,152,16,4590, 11046,9464,3552,576,32,151470,373698,334404, 136144,26112,2208,64,9845550,24593310,22483656, 9518168,1969568,195744,8576,128,1270075950, 3192228090,2949578244,1272810984] |