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A140088 as a simple table

n a(n)
0 0
1 0
2 0
3 1
4 6
5 24
6 78
7 368
8 1902
9 11062
10 77426
11 692414
12 6261624
13 68889928
14 764874856
15 9274470290 

[0,0,0,1,6,24,78,368,1902,11062,77426,692414,
 6261624,68889928,764874856,9274470290]

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Last modified April 24 07:44 EDT 2024. Contains 371922 sequences. (Running on oeis4.)