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A227337 as a simple table

n a(n)
1 2
2 20
3 220
4 5980
5 173420
6 8150740
7 431989220
8 25487363980
9 1707653386660
10 742559959944940
11 79453915714108580
12 10090647295691789660
13 1757620212758033277820
14 286492094679559424284660
15 47844179811486423855538220

[2,20,220,5980,173420,8150740,431989220,
 25487363980,1707653386660,742559959944940,
 79453915714108580,10090647295691789660,
 1757620212758033277820,286492094679559424284660,
 47844179811486423855538220]

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Last modified September 17 21:09 EDT 2024. Contains 375990 sequences. (Running on oeis4.)