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A136795 as a simple table

n a(n)
1 2
2 6
3 20
4 112
5 662
6 4596
7 34032
8 268280
9 2201634
10 18679362
11 162611904
12 1446148032
13 13090979394
14 120303384120
15 1119971272340
16 10544483234056
17 100261309326082
18 961692928106614
19 9296529143261548
20 90497666895840376

[2,6,20,112,662,4596,34032,268280,2201634,
 18679362,162611904,1446148032,13090979394,
 120303384120,1119971272340,10544483234056,
 100261309326082,961692928106614,9296529143261548,
 90497666895840376]

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Last modified April 25 07:53 EDT 2024. Contains 371964 sequences. (Running on oeis4.)