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A089918 as a simple table

n a(n)
0 1
1 1
2 4
3 30
4 344
5 5470
6 113892
7 2988426
8 96098256
9 3706301286
10 168494060060
11 8900937960706
12 539861090952504
13 37212541117261614
14 2889625585310057076
15 250853703625289217690
16 24183224498531542003616

[1,1,4,30,344,5470,113892,2988426,96098256,
 3706301286,168494060060,8900937960706,
 539861090952504,37212541117261614,
 2889625585310057076,250853703625289217690,
 24183224498531542003616]

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Last modified March 28 18:04 EDT 2024. Contains 371254 sequences. (Running on oeis4.)