A102064 - OEIS

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A102064 as a simple table

n	a(n)
1	2
2	4
3	1040
4	4640
5	331520
6	178470400
7	24593254400
8	666964480000
9	66553013755904000
10	4091041782710272000
11	5311565147410595840000
12	211592629697932820480000
13	121215491006931795968000000

[2,4,1040,4640,331520,178470400,24593254400, 666964480000,66553013755904000, 4091041782710272000,5311565147410595840000, 211592629697932820480000, 121215491006931795968000000]