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| n | a(n) |
|---|---|
| 1 | 34 |
| 2 | 258 |
| 3 | 1956 |
| 4 | 14832 |
| 5 | 112464 |
| 6 | 852768 |
| 7 | 6466176 |
| 8 | 49030272 |
| 9 | 371775744 |
| 10 | 2819017728 |
| 11 | 21375415296 |
| 12 | 162080704512 |
| 13 | 1228989210624 |
| 14 | 9318903717888 |
| 15 | 70661292834816 |
| 16 | 535794601623552 |
| 17 | 4062703123759104 |
| 18 | 30805753962037248 |
| 19 | 233586961257332736 |
[34,258,1956,14832,112464,852768,6466176,49030272, 371775744,2819017728,21375415296,162080704512, 1228989210624,9318903717888,70661292834816, 535794601623552,4062703123759104, 30805753962037248,233586961257332736] |