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A007705
as a simple table
n
a(n)
0
1
1
0
2
10
3
28
4
0
5
88
6
4524
7
0
8
140692
9
820496
10
0
11
128850048
12
1957725000
13
0
14
605917055356
15
13404947681712
16
0
[1,0,10,28,0,88,4524,0,140692,820496,0,128850048, 1957725000,0,605917055356,13404947681712,0]
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Last modified April 25 03:15 EDT 2024. Contains 371964 sequences. (Running on oeis4.)