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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 16 |
| 3 | 316 |
| 4 | 69616 |
| 5 | 21999616 |
| 6 | 74351051776 |
| 7 | 374910580965376 |
| 8 | 20054412250260176896 |
| 9 | 1616592330896738401386496 |
| 10 | 1379799701868277127827135922176 |
| 11 | 1779219416300608052895431535861170176 |
[1,16,316,69616,21999616,74351051776, 374910580965376,20054412250260176896, 1616592330896738401386496, 1379799701868277127827135922176, 1779219416300608052895431535861170176] |