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A003203 as a simple table

n a(n)
0 1
1 4
2 12
3 24
4 52
5 108
6 224
7 412
8 844
9 1528
10 3152
11 5036
12 11984
13 15040
14 46512
15 34788
16 197612
17 4036
18 929368
19 -702592
20 4847552
21 -7033956
22 27903296
23 -54403996
24 170579740 

[1,4,12,24,52,108,224,412,844,1528,3152,5036,
 11984,15040,46512,34788,197612,4036,929368,
 -702592,4847552,-7033956,27903296,-54403996,
 170579740]

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Last modified April 19 19:02 EDT 2024. Contains 371798 sequences. (Running on oeis4.)