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A147185 as a simple table

n a(n)
1 1
2 1
3 1
4 1
5 13
6 61
7 329
8 2787
9 39701
10 747265
11 18941331
12 668354617
13 33772020165

[1,1,1,1,13,61,329,2787,39701,747265,18941331,
 668354617,33772020165]

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Last modified June 25 13:19 EDT 2022. Contains 354851 sequences. (Running on oeis4.)