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A304271 as a simple table

n a(n)
1 0
2 0
3 1
4 1
5 0
6 0
7 6
8 24
9 0
10 0
11 139
12 289
13 0
14 0
15 2414
16 4455
17 0
18 0
19 33222
20 63700
21 0
22 0
23 437489
24 794953
25 0
26 0

[0,0,1,1,0,0,6,24,0,0,139,289,0,0,2414,4455,0,0,
 33222,63700,0,0,437489,794953,0,0]

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Last modified May 25 20:09 EDT 2022. Contains 354071 sequences. (Running on oeis4.)