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A240761 as a simple table

n a(n)
1 2
2 6
3 9
4 42
5 124
6 474
7 1440
8 5239
9 16730
10 58945
11 192711
12 666682
13 2209028
14 7562090
15 25254050
16 85922148
17 288250557
18 977287148
19 3287088851
20 11122488393
21 37465304475
22 126628657804
23 426895509278
24 1441942470916
25 4863435928395

[2,6,9,42,124,474,1440,5239,16730,58945,192711,
 666682,2209028,7562090,25254050,85922148,
 288250557,977287148,3287088851,11122488393,
 37465304475,126628657804,426895509278,
 1441942470916,4863435928395]

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Last modified April 25 01:35 EDT 2024. Contains 371964 sequences. (Running on oeis4.)