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A086647 as a simple table

n a(n)
1 1
2 2
3 4
4 12
5 36
6 128
7 460
8 1750
9 6551
10 25108
11 94977
12 363533
13 1378573
14 5273561 

[1,2,4,12,36,128,460,1750,6551,25108,94977,363533,
 1378573,5273561]

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Last modified May 17 19:01 EDT 2024. Contains 372603 sequences. (Running on oeis4.)