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A207448 as a simple table

n a(n)
1 2
2 16
3 90
4 760
5 5200
6 46956
7 370734
8 3599104
9 31807710
10 329885620
11 3198732768
12 35206521816
13 369188811082
14 4287997640080
15 48104913781890
16 586813738039904
17 6984278125524784
18 89124296743065348
19 1118012637781250310

[2,16,90,760,5200,46956,370734,3599104,31807710,
 329885620,3198732768,35206521816,369188811082,
 4287997640080,48104913781890,586813738039904,
 6984278125524784,89124296743065348,
 1118012637781250310]

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Last modified February 4 10:27 EST 2023. Contains 360053 sequences. (Running on oeis4.)