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A001403 as a simple table

n a(n)
1 0
2 0
3 0
4 0
5 0
6 0
7 1
8 1
9 3
10 10
11 31
12 229
13 2036
14 21399
15 245342
16 3004881
17 38904499
18 530452205
19 7640941062 

[0,0,0,0,0,0,1,1,3,10,31,229,2036,21399,245342,
 3004881,38904499,530452205,7640941062]

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Last modified May 13 03:04 EDT 2024. Contains 372497 sequences. (Running on oeis4.)