A163440 - OEIS

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A163440 as a simple table

n	a(n)
0	1
1	15
2	210
3	2940
4	41160
5	576135
6	8064420
7	112881405
8	1580053020
9	22116729180
10	309578036040
11	4333306233165
12	60655281460410
13	849019887139515
14	11884122064943310
15	166347525415813560
16	2328442863574420320

[1,15,210,2940,41160,576135,8064420,112881405, 1580053020,22116729180,309578036040,4333306233165, 60655281460410,849019887139515,11884122064943310, 166347525415813560,2328442863574420320]