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A026331 as a simple table

n a(n)
1 1
2 6
3 30
4 161
5 882
6 4916
7 27729
8 157830
9 904706
10 5215310
11 30203901
12 175598997
13 1024234850
14 5990912280
15 35126915550
16 206399581434
17 1215040298106
18 7164651246340
19 42310256416456
20 250194442456101
21 1481274328929984
22 8779528511274564

[1,6,30,161,882,4916,27729,157830,904706,5215310,
 30203901,175598997,1024234850,5990912280,
 35126915550,206399581434,1215040298106,
 7164651246340,42310256416456,250194442456101,
 1481274328929984,8779528511274564]

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Last modified June 15 22:50 EDT 2024. Contains 373412 sequences. (Running on oeis4.)