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A101736
as a simple table
n
a(n)
1
0
2
1
3
6
4
13
5
24
6
115
7
426
8
594
9
636
10
775
11
1705
12
16627
13
55557
[0,1,6,13,24,115,426,594,636,775,1705,16627,55557]