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A083386 as a simple table

n a(n)
1 0
2 0
3 0
4 82
5 864
6 18784
7 622868
8 18061054
9 264895640
10 7886117822
11 128411926952
12 3611823644006
13 56348098488396
14 1548284436152798
15 24535910156176100
16 650456890341276338
17 10364916108987670024
18 267426031403733462626

[0,0,0,82,864,18784,622868,18061054,264895640,
 7886117822,128411926952,3611823644006,
 56348098488396,1548284436152798,24535910156176100,
 650456890341276338,10364916108987670024,
 267426031403733462626]

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Last modified December 11 11:53 EST 2018. Contains 318049 sequences. (Running on oeis4.)