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A354320 as a simple table

n a(n)
0 1
1 0
2 1
3 6
4 67
5 1020
6 19767
7 464310
8 12802121
9 405017928
10 14454250785
11 574259123790
12 25131727031163
13 1201109694719220
14 62238037299307863
15 3475264183358721390
16 208017790077615619665
17 13286691367919839674000
18 901996048369381319539713

[1,0,1,6,67,1020,19767,464310,12802121,405017928,
 14454250785,574259123790,25131727031163,
 1201109694719220,62238037299307863,
 3475264183358721390,208017790077615619665,
 13286691367919839674000,901996048369381319539713]

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Last modified June 9 23:13 EDT 2024. Contains 373251 sequences. (Running on oeis4.)