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A155558 as a simple table

n a(n)
0 1
1 1
2 6
3 138
4 10488
5 8280
6 2485656
7 1392696
8 1794643632
9 663449904
10 448448112
11 3910528474128
12 904634615952
13 375908525712
14 25621782562486656
15 3570752184568704
16 852504801992064
17 514242863174016
18 504057328351799983488 

[1,1,6,138,10488,8280,2485656,1392696,1794643632,
 663449904,448448112,3910528474128,904634615952,
 375908525712,25621782562486656,3570752184568704,
 852504801992064,514242863174016,
 504057328351799983488]

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Last modified May 15 05:46 EDT 2024. Contains 372538 sequences. (Running on oeis4.)