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A195741 as a simple table

n a(n)
1 0
2 0
3 1
4 6
5 17
6 59
7 195
8 703
9 2499
10 9188
11 33890
12 126758
13 476269
14 1802311
15 6849776
16 26152417
17 100203193

[0,0,1,6,17,59,195,703,2499,9188,33890,126758,
 476269,1802311,6849776,26152417,100203193]

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Last modified September 19 03:31 EDT 2021. Contains 347550 sequences. (Running on oeis4.)