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A180836
as a simple table
n
a(n)
1
1
2
1
3
9
4
72
5
678
6
7719
7
102963
8
1573764
9
27143466
10
521698683
11
11059018599
12
256349691978
13
6451098232944
[1,1,9,72,678,7719,102963,1573764,27143466, 521698683,11059018599,256349691978,6451098232944]
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Last modified June 29 21:05 EDT 2022. Contains 354913 sequences. (Running on oeis4.)
