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| n | a(n) |
|---|---|
| 10 | 2620 |
| 11 | 7408 |
| 12 | 22088 |
| 13 | 68576 |
| 14 | 221715 |
| 15 | 736624 |
| 16 | 2528896 |
| 17 | 8873588 |
| 18 | 32006883 |
| 19 | 117678413 |
| 20 | 443117232 |
| 21 | 1698040262 |
| 22 | 6645905493 |
| 23 | 26440507207 |
| 24 | 107212883073 |
| 25 | 441495784378 |
| 26 | 1849869784105 |
| 27 | 7864963647493 |
| 28 | 33977806366991 |
| 29 | 148834877695923 |
| 30 | 661707905560864 |
| 31 | 2980829993379396 |
[2620,7408,22088,68576,221715,736624,2528896, 8873588,32006883,117678413,443117232,1698040262, 6645905493,26440507207,107212883073,441495784378, 1849869784105,7864963647493,33977806366991, 148834877695923,661707905560864,2980829993379396] |