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A133168 as a simple table

n a(n)
1 0
2 0
3 0
4 1
5 0
6 2
7 0
8 4
9 2
10 13
11 7
12 78
13 106
14 839
15 2368
16 16228
17 69292
18 471625
19 2629867 

[0,0,0,1,0,2,0,4,2,13,7,78,106,839,2368,16228,
 69292,471625,2629867]

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Last modified April 25 05:18 EDT 2024. Contains 371964 sequences. (Running on oeis4.)