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A234020 as a simple table

n a(n)
1 0
2 0
3 0
4 0
5 1
6 1
7 3
8 0
9 5
10 0
11 0
12 33
13 72
14 140
15 267
16 502
17 954
18 1771
19 3355

[0,0,0,0,1,1,3,0,5,0,0,33,72,140,267,502,954,1771,
 3355]

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Last modified May 15 07:17 EDT 2021. Contains 343909 sequences. (Running on oeis4.)