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A052852 as a simple table

n a(n)
0 0
1 1
2 4
3 21
4 136
5 1045
6 9276
7 93289
8 1047376
9 12975561
10 175721140
11 2581284541
12 40864292184
13 693347907421
14 12548540320876
15 241253367679185
16 4909234733857696
17 105394372192969489
18 2380337795595885156

[0,1,4,21,136,1045,9276,93289,1047376,12975561,
 175721140,2581284541,40864292184,693347907421,
 12548540320876,241253367679185,4909234733857696,
 105394372192969489,2380337795595885156]

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Last modified October 21 11:42 EDT 2019. Contains 328296 sequences. (Running on oeis4.)