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A027940 as a simple table

n a(n)
4 1
5 46
6 551
7 3785
8 18955
9 77533
10 276408
11 895103
12 2708322
13 7811510
14 21791338
15 59419294
16 159571139
17 424302452
18 1121168305
19 2951121095
20 7749900701
21 20324325571
22 53259796514
23 139506540045
24 365330860180
25 956582678652
26 2504546934692
27 6557230277964
28 17167369784405

[1,46,551,3785,18955,77533,276408,895103,2708322,
 7811510,21791338,59419294,159571139,424302452,
 1121168305,2951121095,7749900701,20324325571,
 53259796514,139506540045,365330860180,
 956582678652,2504546934692,6557230277964,
 17167369784405]

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Last modified April 19 14:10 EDT 2024. Contains 371792 sequences. (Running on oeis4.)