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A145686 as a simple table

n a(n)
0 1
1 0
2 0
3 0
4 0
5 28690
6 717250
7 164250250
8 39390351505
9 5498418962110
10 430930711621830
11 19714914846904500
12 542987434093298560
13 9222363801696269312
14 98458872937331752960
15 670740325520798121984

[1,0,0,0,0,28690,717250,164250250,39390351505,
 5498418962110,430930711621830,19714914846904500,
 542987434093298560,9222363801696269312,
 98458872937331752960,670740325520798121984]

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Last modified September 27 15:18 EDT 2021. Contains 347691 sequences. (Running on oeis4.)