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A002968
as a simple table
n
a(n)
0
1
1
1
2
0
3
1
4
8
5
22
6
51
7
342
8
2609
9
16896
10
99114
11
876579
12
8551800
13
79595269
14
764804085
15
8905825760
[1,1,0,1,8,22,51,342,2609,16896,99114,876579, 8551800,79595269,764804085,8905825760]
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Last modified April 23 10:29 EDT 2024. Contains 371905 sequences. (Running on oeis4.)