A052842 - OEIS

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A052842 as a simple table

n	a(n)
0	0
1	1
2	3
3	23
4	290
5	5104
6	115374
7	3185972
8	103946688
9	3912527016
10	166884627360
11	7955159511672
12	419106982360560
13	24182042474691984
14	1516563901865906880
15	102717031449780063360
16	7472238163167018081024

[0,1,3,23,290,5104,115374,3185972,103946688, 3912527016,166884627360,7955159511672, 419106982360560,24182042474691984, 1516563901865906880,102717031449780063360, 7472238163167018081024]