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A272755 as a simple table

n a(n)
0 1
1 1
2 5
3 1
4 143
5 19
6 1153
7 583
8 1616353
9 132809
10 134926369
11 46840699
12 67545496213157
13 4068990560161
14 411124285571171
15 1204567303451311
16 73419800947733963069
17 4146897304424408411
18 86773346866163284480799923
19 18814360006695807527868793
20 539741515875650532056045666422369

[1,1,5,1,143,19,1153,583,1616353,132809,134926369,
 46840699,67545496213157,4068990560161,
 411124285571171,1204567303451311,
 73419800947733963069,4146897304424408411,
 86773346866163284480799923,
 18814360006695807527868793,
 539741515875650532056045666422369]

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Last modified August 10 19:52 EDT 2020. Contains 336381 sequences. (Running on oeis4.)