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A173317 as a simple table

n a(n)
0 4
1 4
2 9
3 29
4 119
5 599
6 3599
7 25199
8 201599
9 1814399
10 18143999
11 199583999
12 2395007999
13 31135103999
14 435891455999
15 6538371839999
16 104613949439999
17 1778437140479999
18 32011868528639999
19 608225502044159999

[4,4,9,29,119,599,3599,25199,201599,1814399,
 18143999,199583999,2395007999,31135103999,
 435891455999,6538371839999,104613949439999,
 1778437140479999,32011868528639999,
 608225502044159999]

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Last modified April 23 02:23 EDT 2024. Contains 371906 sequences. (Running on oeis4.)