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A198865 as a simple table

n a(n)
0 1
1 1
2 4
3 31
4 368
5 5941
6 121632
7 3019563
8 88140544
9 2958267241
10 112246484480
11 4751313955543
12 221980968007680
13 11346405913579101
14 629859586327810048
15 37736053514310470371
16 2426956220333852131328
17 166775317658298155269585
18 12195158366650225121427456

[1,1,4,31,368,5941,121632,3019563,88140544,
 2958267241,112246484480,4751313955543,
 221980968007680,11346405913579101,
 629859586327810048,37736053514310470371,
 2426956220333852131328,166775317658298155269585,
 12195158366650225121427456]

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Last modified April 24 19:39 EDT 2024. Contains 371963 sequences. (Running on oeis4.)