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A185513 as a simple table

n a(n)
1 31
2 143
3 593
4 2553
5 10847
6 46303
7 197329
8 841449
9 3587359
10 15295151
11 65211089
12 278030937
13 1185395807
14 5053987327
15 21547889233
16 91870352457
17 391693178911
18 1670000659151
19 7120119353681
20 30356933960889
21 129428088631391

[31,143,593,2553,10847,46303,197329,841449,
 3587359,15295151,65211089,278030937,1185395807,
 5053987327,21547889233,91870352457,391693178911,
 1670000659151,7120119353681,30356933960889,
 129428088631391]

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Last modified May 22 13:12 EDT 2022. Contains 353950 sequences. (Running on oeis4.)