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A009511 as a simple table

n a(n)
0 1
1 4
2 -8
3 -1752
4 -117312
5 -7882624
6 -537535360
7 -27307332608
8 2518262718464
9 1691557864632320
10 611413449329426432
11 205087300464349216768
12 69390989848092392194048
13 23951002005666040825905152

[1,4,-8,-1752,-117312,-7882624,-537535360,
 -27307332608,2518262718464,1691557864632320,
 611413449329426432,205087300464349216768,
 69390989848092392194048,
 23951002005666040825905152]

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Last modified April 24 20:08 EDT 2024. Contains 371963 sequences. (Running on oeis4.)