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A125820 as a simple table

n a(n)
1 1
2 1
3 99
4 295
5 10193
6 49001
7 1086723
8 6926543
9 119265217
10 910405105
11 13389536259
12 115088367703
13 1528961752529
14 14221495172249
15 176752280339811
16 1732989592387775
17 20610950377737217
18 209321891217088609
19 2417905969074687267
20 25140035386206969607

[1,1,99,295,10193,49001,1086723,6926543,119265217,
 910405105,13389536259,115088367703,1528961752529,
 14221495172249,176752280339811,1732989592387775,
 20610950377737217,209321891217088609,
 2417905969074687267,25140035386206969607]

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Last modified November 14 01:24 EST 2019. Contains 329108 sequences. (Running on oeis4.)