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A012507 as a simple table

n a(n)
0 1
1 1
2 -15
3 105
4 8897
5 -664815
6 -4523343
7 8138992953
8 -972054629887
9 -115219461350367
10 72803853486273265
11 -6666182957939643127
12 -7549270905441932464191
13 4123382958180269131627825

[1,1,-15,105,8897,-664815,-4523343,8138992953,
 -972054629887,-115219461350367,72803853486273265,
 -6666182957939643127,-7549270905441932464191,
 4123382958180269131627825]

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Last modified March 28 20:05 EDT 2024. Contains 371254 sequences. (Running on oeis4.)