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A051688 as a simple table

n a(n)
0 1
1 12
2 204
3 4488
4 121176
5 3877632
6 143472384
7 6025840128
8 283214486016
9 14727153272832
10 839447736551424
11 52045759666188288
12 3487065897634615296
13 251068744629692301312
14 19332293336486307201024 

[1,12,204,4488,121176,3877632,143472384,
 6025840128,283214486016,14727153272832,
 839447736551424,52045759666188288,
 3487065897634615296,251068744629692301312,
 19332293336486307201024]

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Last modified May 23 19:42 EDT 2013. Contains 225611 sequences.