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A184963
as a simple table
n
a(n)
0
0
1
0
2
0
3
0
4
0
5
0
6
0
7
1
8
1
9
4
10
21
11
266
12
7848
13
367860
14
21609299
15
1470293674
16
113314233799
17
9799685588930
[0,0,0,0,0,0,0,1,1,4,21,266,7848,367860,21609299, 1470293674,113314233799,9799685588930]
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Last modified June 29 17:26 EDT 2024. Contains 373855 sequences. (Running on oeis4.)