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A133173 as a simple table

n a(n)
1 0
2 0
3 0
4 1
5 0
6 1
7 1
8 5
9 4
10 19
11 26
12 163
13 445
14 2302
15 10798
16 63690
17 381883
18 2550827
19 17945643 

[0,0,0,1,0,1,1,5,4,19,26,163,445,2302,10798,63690,
 381883,2550827,17945643]

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Last modified June 13 01:44 EDT 2024. Contains 373366 sequences. (Running on oeis4.)