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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 3 |
| 3 | 2 |
| 4 | 8 |
| 5 | 12 |
| 6 | 64 |
| 7 | 196 |
| 8 | 864 |
| 9 | 3236 |
| 10 | 13280 |
| 11 | 52260 |
| 12 | 210400 |
| 13 | 838180 |
| 14 | 3358176 |
| 15 | 13419044 |
| 16 | 53698016 |
| 17 | 214737444 |
| 18 | 859037152 |
| 19 | 3435930148 |
| 20 | 13744070112 |
| 21 | 54975406628 |
| 22 | 219903024608 |
| 23 | 879608603172 |
| 24 | 3518440005088 |
| 25 | 14073746039332 |
| 26 | 56295006526944 |
[1,3,2,8,12,64,196,864,3236,13280,52260,210400, 838180,3358176,13419044,53698016,214737444, 859037152,3435930148,13744070112,54975406628, 219903024608,879608603172,3518440005088, 14073746039332,56295006526944] |