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A072258 as a simple table

n a(n)
0 0
1 9
2 69
3 405
4 2133
5 10581
6 50517
7 234837
8 1070421
9 4805973
10 21321045
11 93672789
12 408245589
13 1767200085
14 7605671253
15 32570168661
16 138870609237
17 589842175317
18 2496807654741
19 10536986432853

[0,9,69,405,2133,10581,50517,234837,1070421,
 4805973,21321045,93672789,408245589,1767200085,
 7605671253,32570168661,138870609237,589842175317,
 2496807654741,10536986432853]

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Last modified April 25 05:18 EDT 2024. Contains 371964 sequences. (Running on oeis4.)