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A264293
as a simple table
n
a(n)
0
0
1
0
2
2
3
4
4
9
5
20
6
54
7
131
8
354
9
912
10
2457
11
6429
12
17081
13
44850
14
118578
15
311471
[0,0,2,4,9,20,54,131,354,912,2457,6429,17081, 44850,118578,311471]
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Last modified April 25 16:23 EDT 2024. Contains 371989 sequences. (Running on oeis4.)