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A216728 as a simple table

n a(n)
0 1
1 1
2 30
3 4410
4 1837080
5 1660289400
6 2778905329200
7 7757931431250000
8 33536835305077104000
9 212373276256391153904000
10 1887114765997607482496160000
11 22736049196010108202227823840000
12 361148501823912048339843750000000000
13 7389146090843722060953495522716592000000
14 190939093198813987007780146685866111584000000 

[1,1,30,4410,1837080,1660289400,2778905329200,
 7757931431250000,33536835305077104000,
 212373276256391153904000,
 1887114765997607482496160000,
 22736049196010108202227823840000,
 361148501823912048339843750000000000,
 7389146090843722060953495522716592000000,
 190939093198813987007780146685866111584000000]

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Last modified April 25 05:18 EDT 2024. Contains 371964 sequences. (Running on oeis4.)