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| n | a(n) |
|---|---|
| 0 | 6 |
| 1 | 56 |
| 2 | 1050 |
| 3 | 25112 |
| 4 | 655746 |
| 5 | 17766056 |
| 6 | 489541650 |
| 7 | 13599182072 |
| 8 | 379283617986 |
| 9 | 10599157616456 |
| 10 | 296486304875250 |
| 11 | 8297561014164632 |
| 12 | 232274972859656226 |
| 13 | 6502905234227329256 |
| 14 | 182070232515259616850 |
| 15 | 5097810928082584052792 |
[6,56,1050,25112,655746,17766056,489541650, 13599182072,379283617986,10599157616456, 296486304875250,8297561014164632, 232274972859656226,6502905234227329256, 182070232515259616850,5097810928082584052792] |