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A209319 as a simple table

n a(n)
0 1
1 1
2 4
3 25
4 218
5 2451
6 33832
7 554527
8 10535100
9 227790505
10 5525843696
11 148673435769
12 4394818486456
13 141611317636075
14 4940870266568160
15 185595910032346111
16 7468517348971708688
17 320562141349559055633
18 14619577651630443611200
19 706025600924216704982425

[1,1,4,25,218,2451,33832,554527,10535100,
 227790505,5525843696,148673435769,4394818486456,
 141611317636075,4940870266568160,
 185595910032346111,7468517348971708688,
 320562141349559055633,14619577651630443611200,
 706025600924216704982425]

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