A164867 - OEIS

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A164867 as a simple table

n	a(n)
0	1
1	16
2	240
3	3600
4	54000
5	810000
6	12150000
7	182250000
8	2733749880
9	41006246400
10	615093669120
11	9226404633600
12	138396063456000
13	2075940861120000
14	31139111556000000
15	467086652928000000
16	7006299487740014280

[1,16,240,3600,54000,810000,12150000,182250000, 2733749880,41006246400,615093669120,9226404633600, 138396063456000,2075940861120000, 31139111556000000,467086652928000000, 7006299487740014280]