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A177369 as a simple table

n a(n)
1 1
2 7
3 21
4 87
5 317
6 1215
7 4565
8 17287
9 65261
10 246671
11 931909
12 3521367
13 13305053
14 50272991
15 189953717
16 717732903
17 2711921613
18 10246881583
19 38717399589
20 146292038647 

[1,7,21,87,317,1215,4565,17287,65261,246671,
 931909,3521367,13305053,50272991,189953717,
 717732903,2711921613,10246881583,38717399589,
 146292038647]

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Last modified April 24 09:17 EDT 2024. Contains 371935 sequences. (Running on oeis4.)