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A155392 as a simple table

n a(n)
5 1
6 4
7 13
8 28
9 49
10 96
11 501
12 3463
13 18127
14 74376
15 331418
16 2409920
17 26775212
18 305337017
19 3047283148
20 31207251008
21 409221933719 

[1,4,13,28,49,96,501,3463,18127,74376,331418,
 2409920,26775212,305337017,3047283148,31207251008,
 409221933719]

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Last modified February 8 14:10 EST 2023. Contains 360146 sequences. (Running on oeis4.)