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A119495
as a simple table
n
a(n)
0
1
1
1
2
1
3
2
4
5
5
13
6
37
7
112
8
365
9
1253
10
4542
11
17149
12
67455
13
274134
14
1150125
[1,1,1,2,5,13,37,112,365,1253,4542,17149,67455, 274134,1150125]