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A214553 as a simple table

n a(n)
0 1
1 4
2 40
3 520
4 7680
5 122360
6 2050048
7 35600400
8 635043840
9 11566760920
10 214221455360
11 4021962900592
12 76374500966400
13 1464312851075760
14 28307243610931200
15 551140224522544160
16 10797908842864705536
17 212721273248318069400
18 4211238736846158561280

[1,4,40,520,7680,122360,2050048,35600400,
 635043840,11566760920,214221455360,4021962900592,
 76374500966400,1464312851075760,28307243610931200,
 551140224522544160,10797908842864705536,
 212721273248318069400,4211238736846158561280]

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Last modified May 21 10:20 EDT 2024. Contains 372735 sequences. (Running on oeis4.)