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A055311 as a simple table

n a(n)
11 11
12 135036
13 148478616
14 60841500720
15 14441439612600
16 2425616445732480
17 321683306528263680
18 36020400612748231680
19 3559225274902019923200
20 320000251320623922048000
21 26762519467151924853196800 

[11,135036,148478616,60841500720,14441439612600,
 2425616445732480,321683306528263680,
 36020400612748231680,3559225274902019923200,
 320000251320623922048000,
 26762519467151924853196800]

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Last modified May 8 19:26 EDT 2024. Contains 372341 sequences. (Running on oeis4.)