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A049431
as a simple table
n
a(n)
0
1
1
1
2
6
3
36
4
246
5
2046
6
19716
7
209616
8
2441916
9
31050396
10
425883816
11
6244077456
[1,1,6,36,246,2046,19716,209616,2441916,31050396, 425883816,6244077456]
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Last modified March 29 08:13 EDT 2024. Contains 371265 sequences. (Running on oeis4.)