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A121532 as a simple table

n a(n)
1 0
2 0
3 1
4 6
5 24
6 87
7 290
8 926
9 2861
10 8640
11 25634
12 75015
13 217100
14 622620
15 1772097
16 5011394
17 14093980
18 39448623
19 109954398
20 305344314
21 845165725
22 2332485420
23 6420202246
24 17629525871
25 48304680504
26 132092031672
27 360557665825

[0,0,1,6,24,87,290,926,2861,8640,25634,75015,
 217100,622620,1772097,5011394,14093980,39448623,
 109954398,305344314,845165725,2332485420,
 6420202246,17629525871,48304680504,132092031672,
 360557665825]

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Last modified April 18 18:44 EDT 2024. Contains 371781 sequences. (Running on oeis4.)