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A162806 as a simple table

n a(n)
0 1
1 20
2 380
3 7030
4 129960
5 2400840
6 44352270
7 819332820
8 15135787980
9 279607936230
10 5165281123560
11 95419783331640
12 1762718203098270
13 32563220683609620
14 601550117011031580
15 11112615265773737430

[1,20,380,7030,129960,2400840,44352270,819332820,
 15135787980,279607936230,5165281123560,
 95419783331640,1762718203098270,32563220683609620,
 601550117011031580,11112615265773737430]

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Last modified April 18 06:24 EDT 2024. Contains 371769 sequences. (Running on oeis4.)