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A039618
as a simple table
n
a(n)
0
1
1
0
2
3
3
18
4
138
5
1278
6
13410
7
154584
8
1919352
9
25273422
10
348989058
11
5011939788
12
74393974476
13
1135821378924
[1,0,3,18,138,1278,13410,154584,1919352,25273422, 348989058,5011939788,74393974476,1135821378924]
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Last modified April 19 16:21 EDT 2024. Contains 371794 sequences. (Running on oeis4.)
