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A219766 as a simple table

n a(n)
1 0
2 0
3 0
4 0
5 0
6 0
7 0
8 0
9 2
10 6
11 22
12 67
13 213
14 744
15 2609
16 9016
17 31426
18 110381
19 390223
20 1383905
21 4931307
22 17633765
23 63301415
24 228130900 

[0,0,0,0,0,0,0,0,2,6,22,67,213,744,2609,9016,
 31426,110381,390223,1383905,4931307,17633765,
 63301415,228130900]

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Last modified April 19 15:34 EDT 2024. Contains 371794 sequences. (Running on oeis4.)