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A140907 as a simple table

n a(n)
0 1
1 120
2 4950
3 108900
4 1557270
5 16195608
6 131589315
7 877262100
8 4971151900
9 24584605760
10 108284013552
11 431621592480
12 1577078895600
13 5337805492800
14 16880809870980
15 50245234086564
16 141622596077325
17 379998709805000
18 974996689631250
19 2401570793407500

[1,120,4950,108900,1557270,16195608,131589315,
 877262100,4971151900,24584605760,108284013552,
 431621592480,1577078895600,5337805492800,
 16880809870980,50245234086564,141622596077325,
 379998709805000,974996689631250,2401570793407500]

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Last modified April 24 07:20 EDT 2024. Contains 371921 sequences. (Running on oeis4.)