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A201200 as a simple table

n a(n)
0 1
1 4
2 30
3 256
4 2356
5 22384
6 215640
7 2090176
8 20315536
9 197702464
10 1925042400
11 18749072896
12 182629124416
13 1779030655744
14 17330352562560
15 168824779580416
16 1644626142474496
17 16021353180980224
18 156074394613317120
19 1520422660926324736

[1,4,30,256,2356,22384,215640,2090176,20315536,
 197702464,1925042400,18749072896,182629124416,
 1779030655744,17330352562560,168824779580416,
 1644626142474496,16021353180980224,
 156074394613317120,1520422660926324736]

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Last modified April 25 05:56 EDT 2024. Contains 371964 sequences. (Running on oeis4.)