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A098402 as a simple table

n a(n)
0 1
1 4
2 48
3 640
4 8960
5 129024
6 1892352
7 28114944
8 421724160
9 6372720640
10 96865353728
11 1479398129664
12 22684104654848
13 348986225459200
14 5384358907084800
15 83278084429578240
16 1290810308658462720
17 20045524793284362240
18 311819274562201190400
19 4857816066863765913600

[1,4,48,640,8960,129024,1892352,28114944,
 421724160,6372720640,96865353728,1479398129664,
 22684104654848,348986225459200,5384358907084800,
 83278084429578240,1290810308658462720,
 20045524793284362240,311819274562201190400,
 4857816066863765913600]

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Last modified May 13 00:07 EDT 2024. Contains 372497 sequences. (Running on oeis4.)