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A242136 as a simple table

n a(n)
0 0
1 1
2 6
3 36
4 228
5 1518
6 10530
7 75516
8 556512
9 4194801
10 32224114
11 251565996
12 1991331720
13 15953808780
14 129171585690
15 1055640440268
16 8698890336576
17 72215877581844
18 603532770013080
19 5074488683389840

[0,1,6,36,228,1518,10530,75516,556512,4194801,
 32224114,251565996,1991331720,15953808780,
 129171585690,1055640440268,8698890336576,
 72215877581844,603532770013080,5074488683389840]

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Last modified May 7 20:36 EDT 2021. Contains 343652 sequences. (Running on oeis4.)