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A188976 as a simple table

n a(n)
1 1
2 9
3 116
4 900
5 7836
6 71865
7 640513
8 5706113
9 51056136
10 456396688
11 4078122040
12 36448590305
13 325763780945
14 2911451082361
15 26020738951500
16 232557947597540
17 2078461123504804
18 18576017680577225
19 166021162669244641

[1,9,116,900,7836,71865,640513,5706113,51056136,
 456396688,4078122040,36448590305,325763780945,
 2911451082361,26020738951500,232557947597540,
 2078461123504804,18576017680577225,
 166021162669244641]

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Last modified September 23 04:46 EDT 2021. Contains 347609 sequences. (Running on oeis4.)