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A174285 as a simple table

n a(n)
1 0
2 0
3 0
4 0
5 1
6 3
7 17
8 61
9 235
10 815
11 2563
12 7585
13 22277
14 62065
15 169489
16 452621
17 1191617 

[0,0,0,0,1,3,17,61,235,815,2563,7585,22277,62065,
 169489,452621,1191617]

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Last modified May 14 00:47 EDT 2024. Contains 372528 sequences. (Running on oeis4.)