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A085481 as a simple table

n a(n)
1 1
2 3
3 12
4 45
5 171
6 648
7 2457
8 9315
9 35316
10 133893
11 507627
12 1924560
13 7296561 

[1,3,12,45,171,648,2457,9315,35316,133893,507627,
 1924560,7296561]

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Last modified April 24 04:14 EDT 2024. Contains 371918 sequences. (Running on oeis4.)