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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 34 |
| 2 | 735 |
| 3 | 12920 |
| 4 | 201821 |
| 5 | 2925054 |
| 6 | 40302475 |
| 7 | 535908340 |
| 8 | 6945496041 |
| 9 | 88331974874 |
| 10 | 1107704935415 |
| 11 | 13744775469360 |
| 12 | 169190996868661 |
| 13 | 2070039164549494 |
| 14 | 25209912745227555 |
| 15 | 305937712008039980 |
[1,34,735,12920,201821,2925054,40302475,535908340, 6945496041,88331974874,1107704935415, 13744775469360,169190996868661,2070039164549494, 25209912745227555,305937712008039980] |