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A240986 as a simple table

n a(n)
1 3
2 6
3 -36
4 -216
5 1296
6 -5184
7 -145152
8 -3856896
9 -170325504
10 -6133211136
11 1094593056768
12 26742290558976
13 -497681937801216
14 -14357497419546624
15 657148066947072000
16 12008320398059765760
17 1322255096225695531008
18 70546799432003423698944
19 -6537119853797882157072384
20 -27940593871362459110473728

[3,6,-36,-216,1296,-5184,-145152,-3856896,
 -170325504,-6133211136,1094593056768,
 26742290558976,-497681937801216,
 -14357497419546624,657148066947072000,
 12008320398059765760,1322255096225695531008,
 70546799432003423698944,
 -6537119853797882157072384,
 -27940593871362459110473728]

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Last modified March 28 10:55 EDT 2024. Contains 371241 sequences. (Running on oeis4.)