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A090899
as a simple table
n
a(n)
1
1
2
1
3
1
4
2
5
4
6
11
7
26
8
101
9
440
10
3132
11
40457
12
1274068
[1,1,1,2,4,11,26,101,440,3132,40457,1274068]
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Last modified April 19 19:02 EDT 2024. Contains 371798 sequences. (Running on oeis4.)