A165875 - OEIS

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A165875 as a simple table

n	a(n)
0	1
1	15
2	210
3	2940
4	41160
5	576240
6	8067360
7	112943040
8	1581202560
9	22136835840
10	309915701655
11	4338819821700
12	60743477483325
13	850408684479900
14	11905721578705500
15	166680102045693600
16	2333521427853142800

[1,15,210,2940,41160,576240,8067360,112943040, 1581202560,22136835840,309915701655,4338819821700, 60743477483325,850408684479900,11905721578705500, 166680102045693600,2333521427853142800]