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A306563
as a simple table
n
a(n)
1
0
2
0
3
1
4
2
5
5
6
11
7
26
8
65
9
157
10
398
11
1017
12
2636
13
6891
14
18210
15
48459
16
129935
[0,0,1,2,5,11,26,65,157,398,1017,2636,6891,18210, 48459,129935]
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Last modified August 20 13:45 EDT 2024. Contains 375336 sequences. (Running on oeis4.)