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A360766 as a simple table

n a(n)
0 0
1 1
2 4
3 30
4 320
5 4400
6 73872
7 1462552
8 33325056
9 858283776
10 24641000000
11 779935205984
12 26972930949120
13 1011642325897216
14 40890444454377728
15 1771640957790000000
16 81896889467638120448
17 4022826671022707900416
18 209224123984489179202560

[0,1,4,30,320,4400,73872,1462552,33325056,
 858283776,24641000000,779935205984,26972930949120,
 1011642325897216,40890444454377728,
 1771640957790000000,81896889467638120448,
 4022826671022707900416,209224123984489179202560]

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Last modified July 23 15:54 EDT 2024. Contains 374552 sequences. (Running on oeis4.)