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A283102 as a simple table

n a(n)
1 0
2 0
3 0
4 80
5 4845
6 138792
7 2893338
8 50507680
9 787265325
10 11345154600
11 154362306956
12 2010147294672
13 25288375607950

[0,0,0,80,4845,138792,2893338,50507680,787265325,
 11345154600,154362306956,2010147294672,
 25288375607950]

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Last modified January 26 10:40 EST 2020. Contains 331279 sequences. (Running on oeis4.)