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A103931 as a simple table

n a(n)
1 1
2 4
3 36
4 144
5 3600
6 400
7 19600
8 78400
9 6350400
10 6350400
11 768398400
12 768398400
13 129859329600
14 129859329600
15 129859329600
16 519437318400
17 150117385017600
18 16679709446400
19 6021375110150400
20 240855004406016
21 26761667156224

[1,4,36,144,3600,400,19600,78400,6350400,6350400,
 768398400,768398400,129859329600,129859329600,
 129859329600,519437318400,150117385017600,
 16679709446400,6021375110150400,240855004406016,
 26761667156224]

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Last modified April 24 22:17 EDT 2024. Contains 371964 sequences. (Running on oeis4.)