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A128243 as a simple table

n a(n)
3 0
4 0
5 0
6 1
7 1
8 6
9 17
10 69
11 239
12 962
13 3864
14 17049
15 79607
16 403758
17 2209386
18 13138818
19 84841130
20 595825731 

[0,0,0,1,1,6,17,69,239,962,3864,17049,79607,
 403758,2209386,13138818,84841130,595825731]

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