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A299705 as a simple table

n a(n)
1 1
2 0
3 0
4 1
5 0
6 1
7 2
8 3
9 9
10 23
11 62
12 188
13 574
14 1826
15 5953
16 19664
17 66049
18 224700
19 771859
20 2674753

[1,0,0,1,0,1,2,3,9,23,62,188,574,1826,5953,19664,
 66049,224700,771859,2674753]

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Last modified April 24 07:35 EDT 2024. Contains 371922 sequences. (Running on oeis4.)