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A189580 as a simple table

n a(n)
1 0
2 0
3 0
4 199
5 2564251
6 6007
7 380929
8 35969
9 272809
10 640943
11 5378959
12 18460423
13 2707037 

[0,0,0,199,2564251,6007,380929,35969,272809,
 640943,5378959,18460423,2707037]

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Last modified May 29 04:03 EDT 2023. Contains 363029 sequences. (Running on oeis4.)